Home / 10,511.40-15,767.17-3,115.92

Finding the Fourth Proportional to 10,511.40, 15,767.17 and 3,115.92

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Solution

The fourth proportional to 10,511.40, 15,767.17 and 3,115.92 is: 4,673.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,511.40 : 15,767.17 = 3,115.92 : x
  2. Step 2: Convert to fraction form
    10,511.40/15,767.17 = 3,115.92/x
  3. Step 3: Cross multiply
    10,511.40x = 15,767.17 × 3,115.92
  4. Step 4: Simplify right side
    10,511.40x = 49,129,285.84
  5. Step 5: Solve for x
    x = 49,129,285.84/10,511.40
  6. Step 6: Final answer
    x = 4,673.90

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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.