Find the fourth proportion to 5,6,15
Answers.
A) 18	B) 12	C) 6	D) 9	E) 2
Explanation:   5:6 :: 15:x   =&gt; 5/6 = 15/x   =&gt; x = 15*6/5   =&gt; x = 18   18nswer:18
<result>A</result>
Find the fourth proportion to 5,6,15