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Finding the Fourth Proportional to 11,634.80, 17,414.74 and 8,129.12

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Solution

The fourth proportional to 11,634.80, 17,414.74 and 8,129.12 is: 12,167.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,634.80 : 17,414.74 = 8,129.12 : x
  2. Step 2: Convert to fraction form
    11,634.80/17,414.74 = 8,129.12/x
  3. Step 3: Cross multiply
    11,634.80x = 17,414.74 × 8,129.12
  4. Step 4: Simplify right side
    11,634.80x = 141,566,511.23
  5. Step 5: Solve for x
    x = 141,566,511.23/11,634.80
  6. Step 6: Final answer
    x = 12,167.51

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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.