how to fix small android emulator on 4k screen

I I'm using 4k resulotion and I have created an emulator in avd manager but when I start emulator it shows like this picture:

Android Xamarin Emulator

How can I fix this issue and get the real size of emulator on my 4k screen.

Solution

I fixed the problem by installing 2019 Visual Studio. Thanks to @JonDouglas