Finding unknown resistor in parallel circuit with voltage divider

[rabcdred]

Homework Statement

See attached image.

Homework Equations

V=IR, Kirchoff's Law

The Attempt at a Solution

I thought that since the resistors are in parallel, the voltage drop across each one would be equivalent, so V=I1(14)=I2(38)=I3(7)=I4(Rx). From here I became stuck. Please help!

 

[SammyS]

Homework Statement

https://www.physicsforums.com/attachment.php?attachmentid=43838&stc=1&d=1329108468

Homework Equations

V=IR, Kirchoff's Law

The Attempt at a Solution

I thought that since the resistors are in parallel, the voltage drop across each one would be equivalent, so V=I1(14)=I2(38)=I3(7)=I4(Rx). From here I became stuck. Please help!

Homework Statement

Homework Equations

The Attempt at a Solution

Hello rabcdred. Welcome to PF !

No image !

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