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Finding the Fourth Proportional to 12,654.59, 18,983.27 and 7,755.71

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Solution

The fourth proportional to 12,654.59, 18,983.27 and 7,755.71 is: 11,634.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,654.59 : 18,983.27 = 7,755.71 : x
  2. Step 2: Convert to fraction form
    12,654.59/18,983.27 = 7,755.71/x
  3. Step 3: Cross multiply
    12,654.59x = 18,983.27 × 7,755.71
  4. Step 4: Simplify right side
    12,654.59x = 147,228,736.97
  5. Step 5: Solve for x
    x = 147,228,736.97/12,654.59
  6. Step 6: Final answer
    x = 11,634.41

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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.