Answer :

MattD
The numbers between [tex]\frac{12}{4}=3[/tex] and
[tex]\frac{15}{4}=3\frac{3}{4}[/tex] are:

[tex]\frac{13}{4}=3\frac{1}{4}[/tex] and [tex]\frac{14}{4}=3\frac{2}{4}[/tex]

You must specify the numbers in the numerator greater than 12 but less than 15, then just turn into a fraction.
13/4  13/5 13/6 13/7 13/8 13/9 13/10 13/11 13/ 12 13/13 14/1 14/2