Home / 15,545.07-21,452.85-8,471.88

Finding the Fourth Proportional to 15,545.07, 21,452.85 and 8,471.88

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Solution

The fourth proportional to 15,545.07, 21,452.85 and 8,471.88 is: 11,691.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,545.07 : 21,452.85 = 8,471.88 : x
  2. Step 2: Convert to fraction form
    15,545.07/21,452.85 = 8,471.88/x
  3. Step 3: Cross multiply
    15,545.07x = 21,452.85 × 8,471.88
  4. Step 4: Simplify right side
    15,545.07x = 181,745,970.86
  5. Step 5: Solve for x
    x = 181,745,970.86/15,545.07
  6. Step 6: Final answer
    x = 11,691.55

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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.