The fourth proportional to 5, 8, 15 is:

1.

The fourth proportional to 5, 8, 15 is:

[A].	18
[B].	24
[C].	19
[D].	20

Answer: Option B

Explanation:

Let the fourth proportional to 5, 8, 15 be x.

Then, 5 : 8 : 15 : x

5x = (8 x 15)

x =	(8 x 15)	= 24.
	5

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