Home / 10,517.88-15,771.96-3,939.36

Finding the Fourth Proportional to 10,517.88, 15,771.96 and 3,939.36

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Solution

The fourth proportional to 10,517.88, 15,771.96 and 3,939.36 is: 5,907.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,517.88 : 15,771.96 = 3,939.36 : x
  2. Step 2: Convert to fraction form
    10,517.88/15,771.96 = 3,939.36/x
  3. Step 3: Cross multiply
    10,517.88x = 15,771.96 × 3,939.36
  4. Step 4: Simplify right side
    10,517.88x = 62,131,428.35
  5. Step 5: Solve for x
    x = 62,131,428.35/10,517.88
  6. Step 6: Final answer
    x = 5,907.22

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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.