Home / 20,824.52-28,737.12-11,874.90

Finding the Fourth Proportional to 20,824.52, 28,737.12 and 11,874.90

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Solution

The fourth proportional to 20,824.52, 28,737.12 and 11,874.90 is: 16,386.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.52 : 28,737.12 = 11,874.90 : x
  2. Step 2: Convert to fraction form
    20,824.52/28,737.12 = 11,874.90/x
  3. Step 3: Cross multiply
    20,824.52x = 28,737.12 × 11,874.90
  4. Step 4: Simplify right side
    20,824.52x = 341,250,426.29
  5. Step 5: Solve for x
    x = 341,250,426.29/20,824.52
  6. Step 6: Final answer
    x = 16,386.95

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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.