Home / 10,861.20-16,291.80-9,767.70

Finding the Fourth Proportional to 10,861.20, 16,291.80 and 9,767.70

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Solution

The fourth proportional to 10,861.20, 16,291.80 and 9,767.70 is: 14,651.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,861.20 : 16,291.80 = 9,767.70 : x
  2. Step 2: Convert to fraction form
    10,861.20/16,291.80 = 9,767.70/x
  3. Step 3: Cross multiply
    10,861.20x = 16,291.80 × 9,767.70
  4. Step 4: Simplify right side
    10,861.20x = 159,133,414.86
  5. Step 5: Solve for x
    x = 159,133,414.86/10,861.20
  6. Step 6: Final answer
    x = 14,651.55

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Similar ratio
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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.