Home / 39,156.87-54,036.53-21,251.87

Finding the Fourth Proportional to 39,156.87, 54,036.53 and 21,251.87

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Solution

The fourth proportional to 39,156.87, 54,036.53 and 21,251.87 is: 29,327.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,156.87 : 54,036.53 = 21,251.87 : x
  2. Step 2: Convert to fraction form
    39,156.87/54,036.53 = 21,251.87/x
  3. Step 3: Cross multiply
    39,156.87x = 54,036.53 × 21,251.87
  4. Step 4: Simplify right side
    39,156.87x = 1,148,377,511.45
  5. Step 5: Solve for x
    x = 1,148,377,511.45/39,156.87
  6. Step 6: Final answer
    x = 29,327.61

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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.