How can i retrieve a cell value based on two arrays

Hi All, 

I'm not an expert in Excel, and I've been trying to learn how to retrieve the green cell value with a formula. 

So basically a formula that says the following: 

1. Look for [F2] which is Brand 2
2. Look for the closest or nearest number to [F3] which is 15
3. Retrieve the cross matching exact value which is 5. 

I've managed to use a formula to retrieve exact match (if I write 18.9 in [F3] I get the green cell, but if I put a number that is not in column A, the formula gives an N/A) 

Would appreciate your help. 

Thanks, 

Maghraby