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Finding the Fourth Proportional to 18,382.20, 27,566.74 and 8,519.64

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Solution

The fourth proportional to 18,382.20, 27,566.74 and 8,519.64 is: 12,776.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,382.20 : 27,566.74 = 8,519.64 : x
  2. Step 2: Convert to fraction form
    18,382.20/27,566.74 = 8,519.64/x
  3. Step 3: Cross multiply
    18,382.20x = 27,566.74 × 8,519.64
  4. Step 4: Simplify right side
    18,382.20x = 234,858,700.77
  5. Step 5: Solve for x
    x = 234,858,700.77/18,382.20
  6. Step 6: Final answer
    x = 12,776.42

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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.