Question

if four number 3,5,21,x are in proportion then the value of x is​

Answer 1

Answer:

Step-by-step explanation:

So, your question goes like this:

3:5 :: 21:x

3/5 = 21/x

1/x= 3/(5*21) =1/(5*7) = 1/35

1/x= 1/35

x = 35

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