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Finding the Fourth Proportional to 36,677.92, 55,020.61 and 12,659.10

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Solution

The fourth proportional to 36,677.92, 55,020.61 and 12,659.10 is: 18,989.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,677.92 : 55,020.61 = 12,659.10 : x
  2. Step 2: Convert to fraction form
    36,677.92/55,020.61 = 12,659.10/x
  3. Step 3: Cross multiply
    36,677.92x = 55,020.61 × 12,659.10
  4. Step 4: Simplify right side
    36,677.92x = 696,511,368.29
  5. Step 5: Solve for x
    x = 696,511,368.29/36,677.92
  6. Step 6: Final answer
    x = 18,989.94

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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.