Home / 11,177.38-15,425.19-6,398.20

Finding the Fourth Proportional to 11,177.38, 15,425.19 and 6,398.20

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Solution

The fourth proportional to 11,177.38, 15,425.19 and 6,398.20 is: 8,829.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,177.38 : 15,425.19 = 6,398.20 : x
  2. Step 2: Convert to fraction form
    11,177.38/15,425.19 = 6,398.20/x
  3. Step 3: Cross multiply
    11,177.38x = 15,425.19 × 6,398.20
  4. Step 4: Simplify right side
    11,177.38x = 98,693,341.54
  5. Step 5: Solve for x
    x = 98,693,341.54/11,177.38
  6. Step 6: Final answer
    x = 8,829.74

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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.