Home / 10,512.65-15,766.29-3,115.38

Finding the Fourth Proportional to 10,512.65, 15,766.29 and 3,115.38

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Solution

The fourth proportional to 10,512.65, 15,766.29 and 3,115.38 is: 4,672.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,512.65 : 15,766.29 = 3,115.38 : x
  2. Step 2: Convert to fraction form
    10,512.65/15,766.29 = 3,115.38/x
  3. Step 3: Cross multiply
    10,512.65x = 15,766.29 × 3,115.38
  4. Step 4: Simplify right side
    10,512.65x = 49,117,954.98
  5. Step 5: Solve for x
    x = 49,117,954.98/10,512.65
  6. Step 6: Final answer
    x = 4,672.27

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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.