Home / 15,545.28-21,452.46-8,471.70

Finding the Fourth Proportional to 15,545.28, 21,452.46 and 8,471.70

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Solution

The fourth proportional to 15,545.28, 21,452.46 and 8,471.70 is: 11,690.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,545.28 : 21,452.46 = 8,471.70 : x
  2. Step 2: Convert to fraction form
    15,545.28/21,452.46 = 8,471.70/x
  3. Step 3: Cross multiply
    15,545.28x = 21,452.46 × 8,471.70
  4. Step 4: Simplify right side
    15,545.28x = 181,738,805.38
  5. Step 5: Solve for x
    x = 181,738,805.38/15,545.28
  6. Step 6: Final answer
    x = 11,690.93

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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.