Home / 11,022.80-15,211.20-6,306.78

Finding the Fourth Proportional to 11,022.80, 15,211.20 and 6,306.78

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Solution

The fourth proportional to 11,022.80, 15,211.20 and 6,306.78 is: 8,703.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,022.80 : 15,211.20 = 6,306.78 : x
  2. Step 2: Convert to fraction form
    11,022.80/15,211.20 = 6,306.78/x
  3. Step 3: Cross multiply
    11,022.80x = 15,211.20 × 6,306.78
  4. Step 4: Simplify right side
    11,022.80x = 95,933,691.94
  5. Step 5: Solve for x
    x = 95,933,691.94/11,022.80
  6. Step 6: Final answer
    x = 8,703.21

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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.