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Finding the Fourth Proportional to 18,218.88, 27,329.30 and 5,739.88

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Solution

The fourth proportional to 18,218.88, 27,329.30 and 5,739.88 is: 8,610.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,218.88 : 27,329.30 = 5,739.88 : x
  2. Step 2: Convert to fraction form
    18,218.88/27,329.30 = 5,739.88/x
  3. Step 3: Cross multiply
    18,218.88x = 27,329.30 × 5,739.88
  4. Step 4: Simplify right side
    18,218.88x = 156,866,902.48
  5. Step 5: Solve for x
    x = 156,866,902.48/18,218.88
  6. Step 6: Final answer
    x = 8,610.13

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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.