You can put this solution on YOUR website! Let:
x -be the number
x+1 -be the 2nd number
x+2 -be the 3rd number
x+3 -be the fourth number
You know since they are consecutive :)
(x)(x+1)(x+2)(x+3)=15000
Find x you know. I'm sorry it's just hard to type I'll be late for my examinations wish me luck! ;)