Home / 12,229.08-18,342.69-3,909.97

Finding the Fourth Proportional to 12,229.08, 18,342.69 and 3,909.97

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Solution

The fourth proportional to 12,229.08, 18,342.69 and 3,909.97 is: 5,864.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,229.08 : 18,342.69 = 3,909.97 : x
  2. Step 2: Convert to fraction form
    12,229.08/18,342.69 = 3,909.97/x
  3. Step 3: Cross multiply
    12,229.08x = 18,342.69 × 3,909.97
  4. Step 4: Simplify right side
    12,229.08x = 71,719,367.62
  5. Step 5: Solve for x
    x = 71,719,367.62/12,229.08
  6. Step 6: Final answer
    x = 5,864.66

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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.