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Finding the Fourth Proportional to 18,084.60, 27,118.80 and 8,218.80

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Solution

The fourth proportional to 18,084.60, 27,118.80 and 8,218.80 is: 12,324.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,084.60 : 27,118.80 = 8,218.80 : x
  2. Step 2: Convert to fraction form
    18,084.60/27,118.80 = 8,218.80/x
  3. Step 3: Cross multiply
    18,084.60x = 27,118.80 × 8,218.80
  4. Step 4: Simplify right side
    18,084.60x = 222,883,993.44
  5. Step 5: Solve for x
    x = 222,883,993.44/18,084.60
  6. Step 6: Final answer
    x = 12,324.52

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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.