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Finding the Fourth Proportional to 18,113.59, 27,171.30 and 6,427.72

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Solution

The fourth proportional to 18,113.59, 27,171.30 and 6,427.72 is: 9,641.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,113.59 : 27,171.30 = 6,427.72 : x
  2. Step 2: Convert to fraction form
    18,113.59/27,171.30 = 6,427.72/x
  3. Step 3: Cross multiply
    18,113.59x = 27,171.30 × 6,427.72
  4. Step 4: Simplify right side
    18,113.59x = 174,649,508.44
  5. Step 5: Solve for x
    x = 174,649,508.44/18,113.59
  6. Step 6: Final answer
    x = 9,641.90

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1.5x scale

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.