Home / 15,034.18-20,747.36-8,319.79

Finding the Fourth Proportional to 15,034.18, 20,747.36 and 8,319.79

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Solution

The fourth proportional to 15,034.18, 20,747.36 and 8,319.79 is: 11,481.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,034.18 : 20,747.36 = 8,319.79 : x
  2. Step 2: Convert to fraction form
    15,034.18/20,747.36 = 8,319.79/x
  3. Step 3: Cross multiply
    15,034.18x = 20,747.36 × 8,319.79
  4. Step 4: Simplify right side
    15,034.18x = 172,613,636.66
  5. Step 5: Solve for x
    x = 172,613,636.66/15,034.18
  6. Step 6: Final answer
    x = 11,481.41

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1.5x scale

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.