Home / 10,854.20-16,281.30-5,311.10

Finding the Fourth Proportional to 10,854.20, 16,281.30 and 5,311.10

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Solution

The fourth proportional to 10,854.20, 16,281.30 and 5,311.10 is: 7,966.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,854.20 : 16,281.30 = 5,311.10 : x
  2. Step 2: Convert to fraction form
    10,854.20/16,281.30 = 5,311.10/x
  3. Step 3: Cross multiply
    10,854.20x = 16,281.30 × 5,311.10
  4. Step 4: Simplify right side
    10,854.20x = 86,471,612.43
  5. Step 5: Solve for x
    x = 86,471,612.43/10,854.20
  6. Step 6: Final answer
    x = 7,966.65

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Double scale
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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.