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Finding the Fourth Proportional to 20,253.59, 30,380.20 and 6,402.59

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Solution

The fourth proportional to 20,253.59, 30,380.20 and 6,402.59 is: 9,603.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,253.59 : 30,380.20 = 6,402.59 : x
  2. Step 2: Convert to fraction form
    20,253.59/30,380.20 = 6,402.59/x
  3. Step 3: Cross multiply
    20,253.59x = 30,380.20 × 6,402.59
  4. Step 4: Simplify right side
    20,253.59x = 194,511,964.72
  5. Step 5: Solve for x
    x = 194,511,964.72/20,253.59
  6. Step 6: Final answer
    x = 9,603.83

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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.