Home / 18,158.86-27,221.85-12,614.80

Finding the Fourth Proportional to 18,158.86, 27,221.85 and 12,614.80

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Solution

The fourth proportional to 18,158.86, 27,221.85 and 12,614.80 is: 18,910.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,158.86 : 27,221.85 = 12,614.80 : x
  2. Step 2: Convert to fraction form
    18,158.86/27,221.85 = 12,614.80/x
  3. Step 3: Cross multiply
    18,158.86x = 27,221.85 × 12,614.80
  4. Step 4: Simplify right side
    18,158.86x = 343,398,193.38
  5. Step 5: Solve for x
    x = 343,398,193.38/18,158.86
  6. Step 6: Final answer
    x = 18,910.78

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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.