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Finding the Fourth Proportional to 18,221.71, 27,339.24 and 7,694.41

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Solution

The fourth proportional to 18,221.71, 27,339.24 and 7,694.41 is: 11,544.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,221.71 : 27,339.24 = 7,694.41 : x
  2. Step 2: Convert to fraction form
    18,221.71/27,339.24 = 7,694.41/x
  3. Step 3: Cross multiply
    18,221.71x = 27,339.24 × 7,694.41
  4. Step 4: Simplify right side
    18,221.71x = 210,359,321.65
  5. Step 5: Solve for x
    x = 210,359,321.65/18,221.71
  6. Step 6: Final answer
    x = 11,544.43

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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.