Home / 10,112.82-15,171.38-3,539.22

Finding the Fourth Proportional to 10,112.82, 15,171.38 and 3,539.22

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Solution

The fourth proportional to 10,112.82, 15,171.38 and 3,539.22 is: 5,309.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,112.82 : 15,171.38 = 3,539.22 : x
  2. Step 2: Convert to fraction form
    10,112.82/15,171.38 = 3,539.22/x
  3. Step 3: Cross multiply
    10,112.82x = 15,171.38 × 3,539.22
  4. Step 4: Simplify right side
    10,112.82x = 53,694,851.52
  5. Step 5: Solve for x
    x = 53,694,851.52/10,112.82
  6. Step 6: Final answer
    x = 5,309.58

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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.