Home / 15,034.88-20,747.94-8,320

Finding the Fourth Proportional to 15,034.88, 20,747.94 and 8,320

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Solution

The fourth proportional to 15,034.88, 20,747.94 and 8,320 is: 11,481.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,034.88 : 20,747.94 = 8,320 : x
  2. Step 2: Convert to fraction form
    15,034.88/20,747.94 = 8,320/x
  3. Step 3: Cross multiply
    15,034.88x = 20,747.94 × 8,320
  4. Step 4: Simplify right side
    15,034.88x = 172,622,860.80
  5. Step 5: Solve for x
    x = 172,622,860.80/15,034.88
  6. Step 6: Final answer
    x = 11,481.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.