Home / 39,156.72-54,035.72-21,251.76

Finding the Fourth Proportional to 39,156.72, 54,035.72 and 21,251.76

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Solution

The fourth proportional to 39,156.72, 54,035.72 and 21,251.76 is: 29,327.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,156.72 : 54,035.72 = 21,251.76 : x
  2. Step 2: Convert to fraction form
    39,156.72/54,035.72 = 21,251.76/x
  3. Step 3: Cross multiply
    39,156.72x = 54,035.72 × 21,251.76
  4. Step 4: Simplify right side
    39,156.72x = 1,148,354,152.87
  5. Step 5: Solve for x
    x = 1,148,354,152.87/39,156.72
  6. Step 6: Final answer
    x = 29,327.13

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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.