Home / 20,149.20-27,778.68-16,999.92

Finding the Fourth Proportional to 20,149.20, 27,778.68 and 16,999.92

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Solution

The fourth proportional to 20,149.20, 27,778.68 and 16,999.92 is: 23,436.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149.20 : 27,778.68 = 16,999.92 : x
  2. Step 2: Convert to fraction form
    20,149.20/27,778.68 = 16,999.92/x
  3. Step 3: Cross multiply
    20,149.20x = 27,778.68 × 16,999.92
  4. Step 4: Simplify right side
    20,149.20x = 472,235,337.71
  5. Step 5: Solve for x
    x = 472,235,337.71/20,149.20
  6. Step 6: Final answer
    x = 23,436.93

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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.