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Finding the Fourth Proportional to 18,458.98, 27,687.49 and 5,310.83

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Solution

The fourth proportional to 18,458.98, 27,687.49 and 5,310.83 is: 7,965.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,458.98 : 27,687.49 = 5,310.83 : x
  2. Step 2: Convert to fraction form
    18,458.98/27,687.49 = 5,310.83/x
  3. Step 3: Cross multiply
    18,458.98x = 27,687.49 × 5,310.83
  4. Step 4: Simplify right side
    18,458.98x = 147,043,552.52
  5. Step 5: Solve for x
    x = 147,043,552.52/18,458.98
  6. Step 6: Final answer
    x = 7,965.96

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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.