Home / 15,545.13-21,452.27-8,471.55

Finding the Fourth Proportional to 15,545.13, 21,452.27 and 8,471.55

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Solution

The fourth proportional to 15,545.13, 21,452.27 and 8,471.55 is: 11,690.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,545.13 : 21,452.27 = 8,471.55 : x
  2. Step 2: Convert to fraction form
    15,545.13/21,452.27 = 8,471.55/x
  3. Step 3: Cross multiply
    15,545.13x = 21,452.27 × 8,471.55
  4. Step 4: Simplify right side
    15,545.13x = 181,733,977.92
  5. Step 5: Solve for x
    x = 181,733,977.92/15,545.13
  6. Step 6: Final answer
    x = 11,690.73

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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.