Home / 20,110.20-27,732.30-18,520.98

Finding the Fourth Proportional to 20,110.20, 27,732.30 and 18,520.98

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Solution

The fourth proportional to 20,110.20, 27,732.30 and 18,520.98 is: 25,540.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.20 : 27,732.30 = 18,520.98 : x
  2. Step 2: Convert to fraction form
    20,110.20/27,732.30 = 18,520.98/x
  3. Step 3: Cross multiply
    20,110.20x = 27,732.30 × 18,520.98
  4. Step 4: Simplify right side
    20,110.20x = 513,629,373.65
  5. Step 5: Solve for x
    x = 513,629,373.65/20,110.20
  6. Step 6: Final answer
    x = 25,540.74

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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.