Home / 20,192.86-30,279.25-12,791.71

Finding the Fourth Proportional to 20,192.86, 30,279.25 and 12,791.71

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Solution

The fourth proportional to 20,192.86, 30,279.25 and 12,791.71 is: 19,181.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,192.86 : 30,279.25 = 12,791.71 : x
  2. Step 2: Convert to fraction form
    20,192.86/30,279.25 = 12,791.71/x
  3. Step 3: Cross multiply
    20,192.86x = 30,279.25 × 12,791.71
  4. Step 4: Simplify right side
    20,192.86x = 387,323,385.02
  5. Step 5: Solve for x
    x = 387,323,385.02/20,192.86
  6. Step 6: Final answer
    x = 19,181.20

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1.5x scale

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.