Home / 20,900.20-31,350.30-6,108.52

Finding the Fourth Proportional to 20,900.20, 31,350.30 and 6,108.52

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Solution

The fourth proportional to 20,900.20, 31,350.30 and 6,108.52 is: 9,162.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900.20 : 31,350.30 = 6,108.52 : x
  2. Step 2: Convert to fraction form
    20,900.20/31,350.30 = 6,108.52/x
  3. Step 3: Cross multiply
    20,900.20x = 31,350.30 × 6,108.52
  4. Step 4: Simplify right side
    20,900.20x = 191,503,934.56
  5. Step 5: Solve for x
    x = 191,503,934.56/20,900.20
  6. Step 6: Final answer
    x = 9,162.78

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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.