Home / 39,258.43-54,177-21,353.80

Finding the Fourth Proportional to 39,258.43, 54,177 and 21,353.80

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Solution

The fourth proportional to 39,258.43, 54,177 and 21,353.80 is: 29,468.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,258.43 : 54,177 = 21,353.80 : x
  2. Step 2: Convert to fraction form
    39,258.43/54,177 = 21,353.80/x
  3. Step 3: Cross multiply
    39,258.43x = 54,177 × 21,353.80
  4. Step 4: Simplify right side
    39,258.43x = 1,156,884,822.60
  5. Step 5: Solve for x
    x = 1,156,884,822.60/39,258.43
  6. Step 6: Final answer
    x = 29,468.44

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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.