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Finding the Fourth Proportional to 18,012.94, 27,016.26 and 8,149.90

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Solution

The fourth proportional to 18,012.94, 27,016.26 and 8,149.90 is: 12,223.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,012.94 : 27,016.26 = 8,149.90 : x
  2. Step 2: Convert to fraction form
    18,012.94/27,016.26 = 8,149.90/x
  3. Step 3: Cross multiply
    18,012.94x = 27,016.26 × 8,149.90
  4. Step 4: Simplify right side
    18,012.94x = 220,179,817.37
  5. Step 5: Solve for x
    x = 220,179,817.37/18,012.94
  6. Step 6: Final answer
    x = 12,223.42

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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.