Home / 12,108.38-18,163.32-3,789.62

Finding the Fourth Proportional to 12,108.38, 18,163.32 and 3,789.62

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Solution

The fourth proportional to 12,108.38, 18,163.32 and 3,789.62 is: 5,684.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.38 : 18,163.32 = 3,789.62 : x
  2. Step 2: Convert to fraction form
    12,108.38/18,163.32 = 3,789.62/x
  3. Step 3: Cross multiply
    12,108.38x = 18,163.32 × 3,789.62
  4. Step 4: Simplify right side
    12,108.38x = 68,832,080.74
  5. Step 5: Solve for x
    x = 68,832,080.74/12,108.38
  6. Step 6: Final answer
    x = 5,684.66

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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.