Home / 15,545.32-21,452.20-8,471.80

Finding the Fourth Proportional to 15,545.32, 21,452.20 and 8,471.80

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Solution

The fourth proportional to 15,545.32, 21,452.20 and 8,471.80 is: 11,690.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,545.32 : 21,452.20 = 8,471.80 : x
  2. Step 2: Convert to fraction form
    15,545.32/21,452.20 = 8,471.80/x
  3. Step 3: Cross multiply
    15,545.32x = 21,452.20 × 8,471.80
  4. Step 4: Simplify right side
    15,545.32x = 181,738,747.96
  5. Step 5: Solve for x
    x = 181,738,747.96/15,545.32
  6. Step 6: Final answer
    x = 11,690.90

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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.