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Finding the Fourth Proportional to 18,216.87, 27,318.09 and 8,854.11

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Solution

The fourth proportional to 18,216.87, 27,318.09 and 8,854.11 is: 13,277.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.87 : 27,318.09 = 8,854.11 : x
  2. Step 2: Convert to fraction form
    18,216.87/27,318.09 = 8,854.11/x
  3. Step 3: Cross multiply
    18,216.87x = 27,318.09 × 8,854.11
  4. Step 4: Simplify right side
    18,216.87x = 241,877,373.85
  5. Step 5: Solve for x
    x = 241,877,373.85/18,216.87
  6. Step 6: Final answer
    x = 13,277.66

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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.