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Finding the Fourth Proportional to 18,043.56, 27,069.43 and 8,185.65

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Solution

The fourth proportional to 18,043.56, 27,069.43 and 8,185.65 is: 12,280.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,043.56 : 27,069.43 = 8,185.65 : x
  2. Step 2: Convert to fraction form
    18,043.56/27,069.43 = 8,185.65/x
  3. Step 3: Cross multiply
    18,043.56x = 27,069.43 × 8,185.65
  4. Step 4: Simplify right side
    18,043.56x = 221,580,879.68
  5. Step 5: Solve for x
    x = 221,580,879.68/18,043.56
  6. Step 6: Final answer
    x = 12,280.33

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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.