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Finding the Fourth Proportional to 18,694.26, 27,990.30 and 18,198.54

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Solution

The fourth proportional to 18,694.26, 27,990.30 and 18,198.54 is: 27,248.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.26 : 27,990.30 = 18,198.54 : x
  2. Step 2: Convert to fraction form
    18,694.26/27,990.30 = 18,198.54/x
  3. Step 3: Cross multiply
    18,694.26x = 27,990.30 × 18,198.54
  4. Step 4: Simplify right side
    18,694.26x = 509,382,594.16
  5. Step 5: Solve for x
    x = 509,382,594.16/18,694.26
  6. Step 6: Final answer
    x = 27,248.07

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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.