Home / 13,775.25-20,663.07-3,387

Finding the Fourth Proportional to 13,775.25, 20,663.07 and 3,387

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Solution

The fourth proportional to 13,775.25, 20,663.07 and 3,387 is: 5,080.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.25 : 20,663.07 = 3,387 : x
  2. Step 2: Convert to fraction form
    13,775.25/20,663.07 = 3,387/x
  3. Step 3: Cross multiply
    13,775.25x = 20,663.07 × 3,387
  4. Step 4: Simplify right side
    13,775.25x = 69,985,818.09
  5. Step 5: Solve for x
    x = 69,985,818.09/13,775.25
  6. Step 6: Final answer
    x = 5,080.55

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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.