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Finding the Fourth Proportional to 20,361.56, 30,545.62 and 9,974.12

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Solution

The fourth proportional to 20,361.56, 30,545.62 and 9,974.12 is: 14,962.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,361.56 : 30,545.62 = 9,974.12 : x
  2. Step 2: Convert to fraction form
    20,361.56/30,545.62 = 9,974.12/x
  3. Step 3: Cross multiply
    20,361.56x = 30,545.62 × 9,974.12
  4. Step 4: Simplify right side
    20,361.56x = 304,665,679.35
  5. Step 5: Solve for x
    x = 304,665,679.35/20,361.56
  6. Step 6: Final answer
    x = 14,962.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.