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Finding the Fourth Proportional to 18,027.75, 27,041.63 and 8,661.92

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Solution

The fourth proportional to 18,027.75, 27,041.63 and 8,661.92 is: 12,992.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,027.75 : 27,041.63 = 8,661.92 : x
  2. Step 2: Convert to fraction form
    18,027.75/27,041.63 = 8,661.92/x
  3. Step 3: Cross multiply
    18,027.75x = 27,041.63 × 8,661.92
  4. Step 4: Simplify right side
    18,027.75x = 234,232,257.21
  5. Step 5: Solve for x
    x = 234,232,257.21/18,027.75
  6. Step 6: Final answer
    x = 12,992.87

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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.