Home / 20,121.42-27,767.74-12,168.96

Finding the Fourth Proportional to 20,121.42, 27,767.74 and 12,168.96

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Solution

The fourth proportional to 20,121.42, 27,767.74 and 12,168.96 is: 16,793.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.42 : 27,767.74 = 12,168.96 : x
  2. Step 2: Convert to fraction form
    20,121.42/27,767.74 = 12,168.96/x
  3. Step 3: Cross multiply
    20,121.42x = 27,767.74 × 12,168.96
  4. Step 4: Simplify right side
    20,121.42x = 337,904,517.35
  5. Step 5: Solve for x
    x = 337,904,517.35/20,121.42
  6. Step 6: Final answer
    x = 16,793.27

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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.