The fourth proportional to 5, 8, 15 is:  Choose the correct choice from the following answers:	A) 24	B) 20	C) 23	D) 16	E) None
Answer: Option A   Let the fourth proportional to 5, 8, 15 be x.   Then, 5 : 8 : 15 : x   5x = (8 x 15)   x =	(8 x 15) /5 = 24
<result>A</result>
The fourth proportional to 5, 8, 15 is: