Home / 10,515.38-15,776.04-3,119.82

Finding the Fourth Proportional to 10,515.38, 15,776.04 and 3,119.82

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Solution

The fourth proportional to 10,515.38, 15,776.04 and 3,119.82 is: 4,680.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,515.38 : 15,776.04 = 3,119.82 : x
  2. Step 2: Convert to fraction form
    10,515.38/15,776.04 = 3,119.82/x
  3. Step 3: Cross multiply
    10,515.38x = 15,776.04 × 3,119.82
  4. Step 4: Simplify right side
    10,515.38x = 49,218,405.11
  5. Step 5: Solve for x
    x = 49,218,405.11/10,515.38
  6. Step 6: Final answer
    x = 4,680.61

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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.