Home / 10,919.60-16,379.76-3,127.76

Finding the Fourth Proportional to 10,919.60, 16,379.76 and 3,127.76

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Solution

The fourth proportional to 10,919.60, 16,379.76 and 3,127.76 is: 4,691.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.60 : 16,379.76 = 3,127.76 : x
  2. Step 2: Convert to fraction form
    10,919.60/16,379.76 = 3,127.76/x
  3. Step 3: Cross multiply
    10,919.60x = 16,379.76 × 3,127.76
  4. Step 4: Simplify right side
    10,919.60x = 51,231,958.14
  5. Step 5: Solve for x
    x = 51,231,958.14/10,919.60
  6. Step 6: Final answer
    x = 4,691.74

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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.