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Finding the Fourth Proportional to 36,643.92, 54,979.20 and 15,589.68

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Solution

The fourth proportional to 36,643.92, 54,979.20 and 15,589.68 is: 23,390.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,643.92 : 54,979.20 = 15,589.68 : x
  2. Step 2: Convert to fraction form
    36,643.92/54,979.20 = 15,589.68/x
  3. Step 3: Cross multiply
    36,643.92x = 54,979.20 × 15,589.68
  4. Step 4: Simplify right side
    36,643.92x = 857,108,134.66
  5. Step 5: Solve for x
    x = 857,108,134.66/36,643.92
  6. Step 6: Final answer
    x = 23,390.19

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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.