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<meta>
<topic id="textscalcguidegoalseekxml" indexer="include" status="PUBLISH">
<title id="tit" xml-lang="en-US">Applying Goal Seek</title>
<filename>/text/scalc/guide/goalseek.xhp</filename>
</topic>
</meta>
<body>
<bookmark xml-lang="en-US" branch="index" id="bm_id3145068"><bookmark_value>goal seeking;example</bookmark_value>
<bookmark_value>equations in goal seek</bookmark_value>
<bookmark_value>calculating;variables in equations</bookmark_value>
<bookmark_value>variables;calculating equations</bookmark_value>
<bookmark_value>examples;goal seek</bookmark_value>
</bookmark><comment>mw changed "goal seek example" to "goal seeking;"</comment>
<paragraph role="heading" id="hd_id3145068" xml-lang="en-US" level="1"><variable id="goalseek"><link href="text/scalc/guide/goalseek.xhp">Applying Goal Seek</link>
</variable></paragraph>
<paragraph role="paragraph" id="par_id3145171" xml-lang="en-US">With the help of Goal Seek you can calculate a value that, as part of a formula, leads to the result you specify for the formula. You thus define the formula with several fixed values and one variable value and the result of the formula.</paragraph>
<h2 id="hd_id3153966">Goal Seek Example</h2>
<paragraph role="paragraph" id="par_id3150871" xml-lang="en-US">To calculate annual interest (I), create a table with the values for the capital (C), number of years (n), and interest rate (i). The formula is:</paragraph>
<paragraph role="code" id="par_id3152596" xml-lang="en-US">I = C * n* i</paragraph>
<paragraph role="paragraph" id="par_id3155335" xml-lang="en-US">Let us assume that the interest rate <item type="literal">i</item> of 7.5% and the number of years <item type="literal">n</item> (1) will remain constant. However, you want to know how much the investment capital <item type="literal">C</item> would have to be modified in order to attain a particular return <item type="literal">I</item>. For this example, calculate how much capital <item type="literal">C</item> would be required if you want an annual return of $15,000.</paragraph>
<paragraph role="paragraph" id="par_id3155960" xml-lang="en-US">Enter each of the values for Capital <item type="literal">C</item> (an arbitrary value like <item type="literal">$100,000</item>), number of years <item type="literal">n </item>(<item type="literal">1</item>), and interest rate <item type="literal">i</item> (<item type="literal">7.5%</item>) in one cell each. Enter the formula to calculate the interest <item type="literal">I</item> in another cell. Instead of <item type="literal">C</item>, <item type="literal">n</item>, and <item type="literal">i</item> use the <link href="text/scalc/guide/relativ_absolut_ref.xhp">reference to the cell</link> with the corresponding value.</paragraph>
<list type="ordered">
<listitem>
<paragraph role="listitem" id="par_id3147001" xml-lang="en-US">Place the cursor in the cell containing the interest <item type="literal">I</item>, and choose <emph>Tools - Goal Seek</emph>. The <emph>Goal Seek</emph> dialog appears.</paragraph>
</listitem>
<listitem>
<paragraph role="listitem" id="par_id3150088" xml-lang="en-US">The correct cell is already entered in the field <emph>Formula Cell</emph>.</paragraph>
</listitem>
<listitem>
<paragraph role="listitem" id="par_id3166426" xml-lang="en-US">Place the cursor in the field <emph>Variable Cell</emph>. In the sheet, click in the cell that contains the value to be changed, in this example it is the cell with the capital value <item type="literal">C</item>.</paragraph>
</listitem>
<listitem>
<paragraph role="listitem" id="par_id3150369" xml-lang="en-US">Enter the expected result of the formula in the <emph>Target Value</emph> text box. In this example, the value is 15,000. Click <emph>OK</emph>.</paragraph>
</listitem>
<listitem>
<paragraph role="listitem" id="par_id3146978" xml-lang="en-US">A dialog appears informing you that the Goal Seek was successful. Click <emph>Yes</emph> to enter the result in the cell with the variable value.</paragraph>
</listitem>
</list>
<section id="relatedtopics">
<paragraph role="paragraph" id="par_id3149409" xml-lang="en-US"><link href="text/scalc/01/06040000.xhp">Goal Seek</link></paragraph>
</section>
</body>
</helpdocument>
