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Finding the Fourth Proportional to 18,538,461.30, 27,807,691.95 and 18,538,461.30

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Solution

The fourth proportional to 18,538,461.30, 27,807,691.95 and 18,538,461.30 is: 27,807,691.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,538,461.30 : 27,807,691.95 = 18,538,461.30 : x
  2. Step 2: Convert to fraction form
    18,538,461.30/27,807,691.95 = 18,538,461.30/x
  3. Step 3: Cross multiply
    18,538,461.30x = 27,807,691.95 × 18,538,461.30
  4. Step 4: Simplify right side
    18,538,461.30x = 515,511,821,057,396.56
  5. Step 5: Solve for x
    x = 515,511,821,057,396.56/18,538,461.30
  6. Step 6: Final answer
    x = 27,807,691.95

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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.