Question

8. Find the fourth proportional to 32, 20 and 16.​

Answer 1

Answer:

Step-by-step explanation:

Let the $4^{th}$ proportional be x

= 32:20::16:x

= 32x = 20 x 16

= 32x = 320

= x = 320/32

= x = 10

∴ The $4^{th}$ term is 10.

Answer 2

Answer:

10

Step-by-step explanation:

Let the fourth proportion to be x

Now, 32/20 × 16/x

=> 32 × x = 20 ×16

=> 32x = 320

=> x = 320/32

=> x = 10

So, the fourth proportion is 10

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