Home / 10,949.40-16,424.10-7,666.20

Finding the Fourth Proportional to 10,949.40, 16,424.10 and 7,666.20

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Solution

The fourth proportional to 10,949.40, 16,424.10 and 7,666.20 is: 11,499.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,949.40 : 16,424.10 = 7,666.20 : x
  2. Step 2: Convert to fraction form
    10,949.40/16,424.10 = 7,666.20/x
  3. Step 3: Cross multiply
    10,949.40x = 16,424.10 × 7,666.20
  4. Step 4: Simplify right side
    10,949.40x = 125,910,435.42
  5. Step 5: Solve for x
    x = 125,910,435.42/10,949.40
  6. Step 6: Final answer
    x = 11,499.30

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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.