Home / 39,251.79-54,167.87-21,347.20

Finding the Fourth Proportional to 39,251.79, 54,167.87 and 21,347.20

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Solution

The fourth proportional to 39,251.79, 54,167.87 and 21,347.20 is: 29,459.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,251.79 : 54,167.87 = 21,347.20 : x
  2. Step 2: Convert to fraction form
    39,251.79/54,167.87 = 21,347.20/x
  3. Step 3: Cross multiply
    39,251.79x = 54,167.87 × 21,347.20
  4. Step 4: Simplify right side
    39,251.79x = 1,156,332,112.31
  5. Step 5: Solve for x
    x = 1,156,332,112.31/39,251.79
  6. Step 6: Final answer
    x = 29,459.35

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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.