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Finding the Fourth Proportional to 20,248.56, 30,372.84 and 7,098.48

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Solution

The fourth proportional to 20,248.56, 30,372.84 and 7,098.48 is: 10,647.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,248.56 : 30,372.84 = 7,098.48 : x
  2. Step 2: Convert to fraction form
    20,248.56/30,372.84 = 7,098.48/x
  3. Step 3: Cross multiply
    20,248.56x = 30,372.84 × 7,098.48
  4. Step 4: Simplify right side
    20,248.56x = 215,600,997.28
  5. Step 5: Solve for x
    x = 215,600,997.28/20,248.56
  6. Step 6: Final answer
    x = 10,647.72

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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.