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Finding the Fourth Proportional to 18,144.70, 25,044.92 and 10,974.62

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Solution

The fourth proportional to 18,144.70, 25,044.92 and 10,974.62 is: 15,148.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,144.70 : 25,044.92 = 10,974.62 : x
  2. Step 2: Convert to fraction form
    18,144.70/25,044.92 = 10,974.62/x
  3. Step 3: Cross multiply
    18,144.70x = 25,044.92 × 10,974.62
  4. Step 4: Simplify right side
    18,144.70x = 274,858,479.93
  5. Step 5: Solve for x
    x = 274,858,479.93/18,144.70
  6. Step 6: Final answer
    x = 15,148.14

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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.