Home / 20,119.76-27,761.22-12,162.44

Finding the Fourth Proportional to 20,119.76, 27,761.22 and 12,162.44

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Solution

The fourth proportional to 20,119.76, 27,761.22 and 12,162.44 is: 16,781.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.76 : 27,761.22 = 12,162.44 : x
  2. Step 2: Convert to fraction form
    20,119.76/27,761.22 = 12,162.44/x
  3. Step 3: Cross multiply
    20,119.76x = 27,761.22 × 12,162.44
  4. Step 4: Simplify right side
    20,119.76x = 337,644,033.77
  5. Step 5: Solve for x
    x = 337,644,033.77/20,119.76
  6. Step 6: Final answer
    x = 16,781.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.