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Finding the Fourth Proportional to 18,222.40, 27,332 and 5,073.92

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Solution

The fourth proportional to 18,222.40, 27,332 and 5,073.92 is: 7,610.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,222.40 : 27,332 = 5,073.92 : x
  2. Step 2: Convert to fraction form
    18,222.40/27,332 = 5,073.92/x
  3. Step 3: Cross multiply
    18,222.40x = 27,332 × 5,073.92
  4. Step 4: Simplify right side
    18,222.40x = 138,680,381.44
  5. Step 5: Solve for x
    x = 138,680,381.44/18,222.40
  6. Step 6: Final answer
    x = 7,610.43

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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.