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Finding the Fourth Proportional to 18,006.66, 27,006.87 and 8,143.65

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Solution

The fourth proportional to 18,006.66, 27,006.87 and 8,143.65 is: 12,214.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,006.66 : 27,006.87 = 8,143.65 : x
  2. Step 2: Convert to fraction form
    18,006.66/27,006.87 = 8,143.65/x
  3. Step 3: Cross multiply
    18,006.66x = 27,006.87 × 8,143.65
  4. Step 4: Simplify right side
    18,006.66x = 219,934,527.41
  5. Step 5: Solve for x
    x = 219,934,527.41/18,006.66
  6. Step 6: Final answer
    x = 12,214.07

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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.