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Finding the Fourth Proportional to 12,338.56, 18,508.11 and 4,018.56

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Solution

The fourth proportional to 12,338.56, 18,508.11 and 4,018.56 is: 6,027.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,338.56 : 18,508.11 = 4,018.56 : x
  2. Step 2: Convert to fraction form
    12,338.56/18,508.11 = 4,018.56/x
  3. Step 3: Cross multiply
    12,338.56x = 18,508.11 × 4,018.56
  4. Step 4: Simplify right side
    12,338.56x = 74,375,950.52
  5. Step 5: Solve for x
    x = 74,375,950.52/12,338.56
  6. Step 6: Final answer
    x = 6,027.93

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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.