Hi,
If you are using VMWare, usually VMWare creates some virtual network device. You may check those virtual network device. Mine (in Ubuntu) called vmnet1, vmnet8.
Then, check whether your Virtual-Machine is NAT or bridged. Usually it is NAT.
So, if your Virtual-Machine is NAT, and your vmnet8 address is for example: 172.16.20.1, then your all Virtual-Machines would be 172.16.20.2-254
Easier Trick:
If your Virtual-Machine is NAT, the default gateway of Virtual-Machine is the IP-Address of your Real-Machine.
Give it a try