If the first and second term of a ratio is $a:b$, then what is $b$ known as?  $(\mathrm{Antecedent}/\mathrm{Consequent})$

An electric pole casts a shadow of length $18$m at a time when a tree $12$ m high casts a shadow $9$m long. If the height of the pole is $k m$, then find the value of $k$.

In a sports academy, $36$ cricket players and $24$ football players are getting training.

Find the following ratio in the simplest form :

Football players to cricket players