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Finding the Fourth Proportional to 18,443.16, 27,659.70 and 5,292

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Solution

The fourth proportional to 18,443.16, 27,659.70 and 5,292 is: 7,936.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,443.16 : 27,659.70 = 5,292 : x
  2. Step 2: Convert to fraction form
    18,443.16/27,659.70 = 5,292/x
  3. Step 3: Cross multiply
    18,443.16x = 27,659.70 × 5,292
  4. Step 4: Simplify right side
    18,443.16x = 146,375,132.40
  5. Step 5: Solve for x
    x = 146,375,132.40/18,443.16
  6. Step 6: Final answer
    x = 7,936.55

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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.