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Finding the Fourth Proportional to 12,481.29, 18,715.46 and 6,926.31

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Solution

The fourth proportional to 12,481.29, 18,715.46 and 6,926.31 is: 10,385.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481.29 : 18,715.46 = 6,926.31 : x
  2. Step 2: Convert to fraction form
    12,481.29/18,715.46 = 6,926.31/x
  3. Step 3: Cross multiply
    12,481.29x = 18,715.46 × 6,926.31
  4. Step 4: Simplify right side
    12,481.29x = 129,629,043.12
  5. Step 5: Solve for x
    x = 129,629,043.12/12,481.29
  6. Step 6: Final answer
    x = 10,385.87

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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.