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Finding the Fourth Proportional to 12,553.74, 18,791.72 and 7,369.74

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Solution

The fourth proportional to 12,553.74, 18,791.72 and 7,369.74 is: 11,031.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,553.74 : 18,791.72 = 7,369.74 : x
  2. Step 2: Convert to fraction form
    12,553.74/18,791.72 = 7,369.74/x
  3. Step 3: Cross multiply
    12,553.74x = 18,791.72 × 7,369.74
  4. Step 4: Simplify right side
    12,553.74x = 138,489,996.59
  5. Step 5: Solve for x
    x = 138,489,996.59/12,553.74
  6. Step 6: Final answer
    x = 11,031.78

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.