Question

If 12,18,42 and x are in proportion then x =​

Answer 1

Answer:

9

Step-by-step explanation:

we know that -

if a:b::c:d , then (a×d):(b×c)

= (12×x):(18×42)

=12x : 108

= x :9

So, x=9

Answer 2

Answer:

x=63

Step-by-step explanation:

mean *extremes

=12*x=18*42

=12x=756

=756/12=x

x=63

hence 12:18:42:63 are in proportion

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