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Finding the Fourth Proportional to 18,453.96, 27,679.92 and 8,065.68

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Solution

The fourth proportional to 18,453.96, 27,679.92 and 8,065.68 is: 12,098.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,453.96 : 27,679.92 = 8,065.68 : x
  2. Step 2: Convert to fraction form
    18,453.96/27,679.92 = 8,065.68/x
  3. Step 3: Cross multiply
    18,453.96x = 27,679.92 × 8,065.68
  4. Step 4: Simplify right side
    18,453.96x = 223,257,377.15
  5. Step 5: Solve for x
    x = 223,257,377.15/18,453.96
  6. Step 6: Final answer
    x = 12,098.07

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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.