Choosing a smaller second monitor that has the same scaling as my 32" 4k monitor

[bakteria]

I need help choosing a screen that scales well in macos with my benq pd3220u for around 600-800 dollars.
I would really like the screen to be smaller than 32".

I tried a 27" dell 1440p but it just looked blurry and pixelated in comparison to the benq. I want the UI to pretty much look the same across both screens.

 

[Fishrrman]

Use this page as a guide:

DPI Calculator / PPI Calculator

If we go there, we find that the pixel size for a 32" 1440p display is .2767mm.

If we change the display to 24" 1080p, we find the pixel size is .2767mm -- exactly the same.

So...
If you're looking for a second display with an image that "looks the same across both screens", I believe a 24" display (either native 1080p or perhaps a 4k display running in "looks like 1080p") will fill that need.