Home / 20,086.30-30,117.30-8,990.92

Finding the Fourth Proportional to 20,086.30, 30,117.30 and 8,990.92

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Solution

The fourth proportional to 20,086.30, 30,117.30 and 8,990.92 is: 13,480.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,086.30 : 30,117.30 = 8,990.92 : x
  2. Step 2: Convert to fraction form
    20,086.30/30,117.30 = 8,990.92/x
  3. Step 3: Cross multiply
    20,086.30x = 30,117.30 × 8,990.92
  4. Step 4: Simplify right side
    20,086.30x = 270,782,234.92
  5. Step 5: Solve for x
    x = 270,782,234.92/20,086.30
  6. Step 6: Final answer
    x = 13,480.94

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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.