Home / 11,179.20-15,427.56-6,143.90

Finding the Fourth Proportional to 11,179.20, 15,427.56 and 6,143.90

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Solution

The fourth proportional to 11,179.20, 15,427.56 and 6,143.90 is: 8,478.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,179.20 : 15,427.56 = 6,143.90 : x
  2. Step 2: Convert to fraction form
    11,179.20/15,427.56 = 6,143.90/x
  3. Step 3: Cross multiply
    11,179.20x = 15,427.56 × 6,143.90
  4. Step 4: Simplify right side
    11,179.20x = 94,785,308.75
  5. Step 5: Solve for x
    x = 94,785,308.75/11,179.20
  6. Step 6: Final answer
    x = 8,478.72

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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.