Home / 20,545.68-28,353.34-13,471.95

Finding the Fourth Proportional to 20,545.68, 28,353.34 and 13,471.95

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Solution

The fourth proportional to 20,545.68, 28,353.34 and 13,471.95 is: 18,591.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.68 : 28,353.34 = 13,471.95 : x
  2. Step 2: Convert to fraction form
    20,545.68/28,353.34 = 13,471.95/x
  3. Step 3: Cross multiply
    20,545.68x = 28,353.34 × 13,471.95
  4. Step 4: Simplify right side
    20,545.68x = 381,974,901.98
  5. Step 5: Solve for x
    x = 381,974,901.98/20,545.68
  6. Step 6: Final answer
    x = 18,591.49

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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.