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Finding the Fourth Proportional to 18,012.57, 27,018.51 and 8,144.96

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Solution

The fourth proportional to 18,012.57, 27,018.51 and 8,144.96 is: 12,217.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,012.57 : 27,018.51 = 8,144.96 : x
  2. Step 2: Convert to fraction form
    18,012.57/27,018.51 = 8,144.96/x
  3. Step 3: Cross multiply
    18,012.57x = 27,018.51 × 8,144.96
  4. Step 4: Simplify right side
    18,012.57x = 220,064,548.12
  5. Step 5: Solve for x
    x = 220,064,548.12/18,012.57
  6. Step 6: Final answer
    x = 12,217.28

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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.