Home / 20,432.70-30,664.26-15,179.94

Finding the Fourth Proportional to 20,432.70, 30,664.26 and 15,179.94

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Solution

The fourth proportional to 20,432.70, 30,664.26 and 15,179.94 is: 22,781.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.70 : 30,664.26 = 15,179.94 : x
  2. Step 2: Convert to fraction form
    20,432.70/30,664.26 = 15,179.94/x
  3. Step 3: Cross multiply
    20,432.70x = 30,664.26 × 15,179.94
  4. Step 4: Simplify right side
    20,432.70x = 465,481,626.94
  5. Step 5: Solve for x
    x = 465,481,626.94/20,432.70
  6. Step 6: Final answer
    x = 22,781.21

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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.