Home / 39,108.08-53,969.40-21,203.36

Finding the Fourth Proportional to 39,108.08, 53,969.40 and 21,203.36

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Solution

The fourth proportional to 39,108.08, 53,969.40 and 21,203.36 is: 29,260.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,108.08 : 53,969.40 = 21,203.36 : x
  2. Step 2: Convert to fraction form
    39,108.08/53,969.40 = 21,203.36/x
  3. Step 3: Cross multiply
    39,108.08x = 53,969.40 × 21,203.36
  4. Step 4: Simplify right side
    39,108.08x = 1,144,332,347.34
  5. Step 5: Solve for x
    x = 1,144,332,347.34/39,108.08
  6. Step 6: Final answer
    x = 29,260.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.