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Finding the Fourth Proportional to 9,997.20, 14,974.20 and 8,269.20

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Solution

The fourth proportional to 9,997.20, 14,974.20 and 8,269.20 is: 12,385.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,997.20 : 14,974.20 = 8,269.20 : x
  2. Step 2: Convert to fraction form
    9,997.20/14,974.20 = 8,269.20/x
  3. Step 3: Cross multiply
    9,997.20x = 14,974.20 × 8,269.20
  4. Step 4: Simplify right side
    9,997.20x = 123,824,654.64
  5. Step 5: Solve for x
    x = 123,824,654.64/9,997.20
  6. Step 6: Final answer
    x = 12,385.93

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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.