Home / 39,156.68-54,037.28-21,251.72

Finding the Fourth Proportional to 39,156.68, 54,037.28 and 21,251.72

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Solution

The fourth proportional to 39,156.68, 54,037.28 and 21,251.72 is: 29,327.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,156.68 : 54,037.28 = 21,251.72 : x
  2. Step 2: Convert to fraction form
    39,156.68/54,037.28 = 21,251.72/x
  3. Step 3: Cross multiply
    39,156.68x = 54,037.28 × 21,251.72
  4. Step 4: Simplify right side
    39,156.68x = 1,148,385,144.12
  5. Step 5: Solve for x
    x = 1,148,385,144.12/39,156.68
  6. Step 6: Final answer
    x = 29,327.95

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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.