A culture started with 2000 bacteria after 6 hours it grew to 2400 bacteria how many bacteria will grow after 16 hours

Started at 2000 ... after 6 hrs it grew to 2400 ... that means in 6 hrs, it grew 400.

6/400 = 16/x ... 6 hrs to 400 = 16 hrs to x

this is a proportion, so we cross multiply

(6) (x) = (400) (16)

6x = 6400

x = 6400/6

x = 1066.67 <==