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Finding the Fourth Proportional to 18,651.74, 27,974.50 and 5,500.98

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Solution

The fourth proportional to 18,651.74, 27,974.50 and 5,500.98 is: 8,250.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.74 : 27,974.50 = 5,500.98 : x
  2. Step 2: Convert to fraction form
    18,651.74/27,974.50 = 5,500.98/x
  3. Step 3: Cross multiply
    18,651.74x = 27,974.50 × 5,500.98
  4. Step 4: Simplify right side
    18,651.74x = 153,887,151.26
  5. Step 5: Solve for x
    x = 153,887,151.26/18,651.74
  6. Step 6: Final answer
    x = 8,250.55

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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.