Home / 39,122.78-53,984.25-22,129.34

Finding the Fourth Proportional to 39,122.78, 53,984.25 and 22,129.34

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Solution

The fourth proportional to 39,122.78, 53,984.25 and 22,129.34 is: 30,535.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,122.78 : 53,984.25 = 22,129.34 : x
  2. Step 2: Convert to fraction form
    39,122.78/53,984.25 = 22,129.34/x
  3. Step 3: Cross multiply
    39,122.78x = 53,984.25 × 22,129.34
  4. Step 4: Simplify right side
    39,122.78x = 1,194,635,822.90
  5. Step 5: Solve for x
    x = 1,194,635,822.90/39,122.78
  6. Step 6: Final answer
    x = 30,535.56

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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.