Home / 18,665.43-28,003.24-5,517.79

Finding the Fourth Proportional to 18,665.43, 28,003.24 and 5,517.79

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Solution

The fourth proportional to 18,665.43, 28,003.24 and 5,517.79 is: 8,278.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.43 : 28,003.24 = 5,517.79 : x
  2. Step 2: Convert to fraction form
    18,665.43/28,003.24 = 5,517.79/x
  3. Step 3: Cross multiply
    18,665.43x = 28,003.24 × 5,517.79
  4. Step 4: Simplify right side
    18,665.43x = 154,515,997.64
  5. Step 5: Solve for x
    x = 154,515,997.64/18,665.43
  6. Step 6: Final answer
    x = 8,278.19

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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.