Answer: 36 tomatoes
Explanation:
Look at the ratio 3 red apples to 4 tomatoes.
There are 27 red apples and a mysterious number of tomatoes. Well in order for this relationship to work the number of tomatoes have to dividable by 9 in order for this to work.
So if you do 3*9 that is 27 red apples.
Then you do 4*9 and that is 36 tomatoes.
So the new ratio is 27:36 making there being 36 tomatoes.