<PRE><B>Question 1167691</B>
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The problem is not described sufficiently.  Specifically, there is no description of where Z is.&lt;br&gt;
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Thanks for supplying the diagram.  Now you can solve the problem.&lt;br&gt;
In triangle WXY, WY=15 by the Pythagorean Theorem.&lt;br&gt;
Extend WX to a new point P and draw ZP, with ZP perpendicular to WP.&lt;br&gt;
Triangles WXY and WPZ are similar; YZ=5 and WY=15 tells us the ratio of similarity is 3:4.&lt;br&gt;
Use that ratio of similarity to find WP and ZP; then find XP.&lt;br&gt;
Then you can find XZ using the Pythagorean Theorem on triangle XPZ.&lt;br&gt;

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