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Finding the Fourth Proportional to 10,837.80, 16,272.90 and 8,375.40

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Solution

The fourth proportional to 10,837.80, 16,272.90 and 8,375.40 is: 12,575.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,837.80 : 16,272.90 = 8,375.40 : x
  2. Step 2: Convert to fraction form
    10,837.80/16,272.90 = 8,375.40/x
  3. Step 3: Cross multiply
    10,837.80x = 16,272.90 × 8,375.40
  4. Step 4: Simplify right side
    10,837.80x = 136,292,046.66
  5. Step 5: Solve for x
    x = 136,292,046.66/10,837.80
  6. Step 6: Final answer
    x = 12,575.62

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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.