Home / 39,787.92-59,686.68-13,500.12

Finding the Fourth Proportional to 39,787.92, 59,686.68 and 13,500.12

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Solution

The fourth proportional to 39,787.92, 59,686.68 and 13,500.12 is: 20,251.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,787.92 : 59,686.68 = 13,500.12 : x
  2. Step 2: Convert to fraction form
    39,787.92/59,686.68 = 13,500.12/x
  3. Step 3: Cross multiply
    39,787.92x = 59,686.68 × 13,500.12
  4. Step 4: Simplify right side
    39,787.92x = 805,777,342.40
  5. Step 5: Solve for x
    x = 805,777,342.40/39,787.92
  6. Step 6: Final answer
    x = 20,251.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.