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Finding the Fourth Proportional to 18,649.53, 27,974.67 and 6,960.42

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Solution

The fourth proportional to 18,649.53, 27,974.67 and 6,960.42 is: 10,440.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,649.53 : 27,974.67 = 6,960.42 : x
  2. Step 2: Convert to fraction form
    18,649.53/27,974.67 = 6,960.42/x
  3. Step 3: Cross multiply
    18,649.53x = 27,974.67 × 6,960.42
  4. Step 4: Simplify right side
    18,649.53x = 194,715,452.56
  5. Step 5: Solve for x
    x = 194,715,452.56/18,649.53
  6. Step 6: Final answer
    x = 10,440.77

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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.