Home / 10,515.31-15,772.50-2,617.66

Finding the Fourth Proportional to 10,515.31, 15,772.50 and 2,617.66

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Solution

The fourth proportional to 10,515.31, 15,772.50 and 2,617.66 is: 3,926.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,515.31 : 15,772.50 = 2,617.66 : x
  2. Step 2: Convert to fraction form
    10,515.31/15,772.50 = 2,617.66/x
  3. Step 3: Cross multiply
    10,515.31x = 15,772.50 × 2,617.66
  4. Step 4: Simplify right side
    10,515.31x = 41,287,042.35
  5. Step 5: Solve for x
    x = 41,287,042.35/10,515.31
  6. Step 6: Final answer
    x = 3,926.37

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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.