Home / 20,108.13-27,745.17-12,150.80

Finding the Fourth Proportional to 20,108.13, 27,745.17 and 12,150.80

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Solution

The fourth proportional to 20,108.13, 27,745.17 and 12,150.80 is: 16,765.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.13 : 27,745.17 = 12,150.80 : x
  2. Step 2: Convert to fraction form
    20,108.13/27,745.17 = 12,150.80/x
  3. Step 3: Cross multiply
    20,108.13x = 27,745.17 × 12,150.80
  4. Step 4: Simplify right side
    20,108.13x = 337,125,872.91
  5. Step 5: Solve for x
    x = 337,125,872.91/20,108.13
  6. Step 6: Final answer
    x = 16,765.65

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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.