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Finding the Fourth Proportional to 18,691.95, 25,794.92 and 10,194.09

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Solution

The fourth proportional to 18,691.95, 25,794.92 and 10,194.09 is: 14,067.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.95 : 25,794.92 = 10,194.09 : x
  2. Step 2: Convert to fraction form
    18,691.95/25,794.92 = 10,194.09/x
  3. Step 3: Cross multiply
    18,691.95x = 25,794.92 × 10,194.09
  4. Step 4: Simplify right side
    18,691.95x = 262,955,736.02
  5. Step 5: Solve for x
    x = 262,955,736.02/18,691.95
  6. Step 6: Final answer
    x = 14,067.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.