Home / 20,584.75-30,918.45-12,280.97

Finding the Fourth Proportional to 20,584.75, 30,918.45 and 12,280.97

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Solution

The fourth proportional to 20,584.75, 30,918.45 and 12,280.97 is: 18,446.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,584.75 : 30,918.45 = 12,280.97 : x
  2. Step 2: Convert to fraction form
    20,584.75/30,918.45 = 12,280.97/x
  3. Step 3: Cross multiply
    20,584.75x = 30,918.45 × 12,280.97
  4. Step 4: Simplify right side
    20,584.75x = 379,708,402.30
  5. Step 5: Solve for x
    x = 379,708,402.30/20,584.75
  6. Step 6: Final answer
    x = 18,446.11

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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.