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Finding the Fourth Proportional to 11,843.38, 16,343.99 and 6,538.20

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Solution

The fourth proportional to 11,843.38, 16,343.99 and 6,538.20 is: 9,022.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,843.38 : 16,343.99 = 6,538.20 : x
  2. Step 2: Convert to fraction form
    11,843.38/16,343.99 = 6,538.20/x
  3. Step 3: Cross multiply
    11,843.38x = 16,343.99 × 6,538.20
  4. Step 4: Simplify right side
    11,843.38x = 106,860,193.70
  5. Step 5: Solve for x
    x = 106,860,193.70/11,843.38
  6. Step 6: Final answer
    x = 9,022.78

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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.