Home / 20,517.38-30,763.26-8,665.06

Finding the Fourth Proportional to 20,517.38, 30,763.26 and 8,665.06

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Solution

The fourth proportional to 20,517.38, 30,763.26 and 8,665.06 is: 12,992.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.38 : 30,763.26 = 8,665.06 : x
  2. Step 2: Convert to fraction form
    20,517.38/30,763.26 = 8,665.06/x
  3. Step 3: Cross multiply
    20,517.38x = 30,763.26 × 8,665.06
  4. Step 4: Simplify right side
    20,517.38x = 266,565,493.70
  5. Step 5: Solve for x
    x = 266,565,493.70/20,517.38
  6. Step 6: Final answer
    x = 12,992.18

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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.