Home / 10,672.12-16,008.30-5,129.80

Finding the Fourth Proportional to 10,672.12, 16,008.30 and 5,129.80

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Solution

The fourth proportional to 10,672.12, 16,008.30 and 5,129.80 is: 7,694.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,672.12 : 16,008.30 = 5,129.80 : x
  2. Step 2: Convert to fraction form
    10,672.12/16,008.30 = 5,129.80/x
  3. Step 3: Cross multiply
    10,672.12x = 16,008.30 × 5,129.80
  4. Step 4: Simplify right side
    10,672.12x = 82,119,377.34
  5. Step 5: Solve for x
    x = 82,119,377.34/10,672.12
  6. Step 6: Final answer
    x = 7,694.76

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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.