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Finding the Fourth Proportional to 18,610.25, 25,694.03 and 12,942.95

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Solution

The fourth proportional to 18,610.25, 25,694.03 and 12,942.95 is: 17,869.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,610.25 : 25,694.03 = 12,942.95 : x
  2. Step 2: Convert to fraction form
    18,610.25/25,694.03 = 12,942.95/x
  3. Step 3: Cross multiply
    18,610.25x = 25,694.03 × 12,942.95
  4. Step 4: Simplify right side
    18,610.25x = 332,556,480.87
  5. Step 5: Solve for x
    x = 332,556,480.87/18,610.25
  6. Step 6: Final answer
    x = 17,869.53

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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.