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Finding the Fourth Proportional to 18,642.26, 27,974.33 and 6,956.39

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Solution

The fourth proportional to 18,642.26, 27,974.33 and 6,956.39 is: 10,438.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,642.26 : 27,974.33 = 6,956.39 : x
  2. Step 2: Convert to fraction form
    18,642.26/27,974.33 = 6,956.39/x
  3. Step 3: Cross multiply
    18,642.26x = 27,974.33 × 6,956.39
  4. Step 4: Simplify right side
    18,642.26x = 194,600,174.82
  5. Step 5: Solve for x
    x = 194,600,174.82/18,642.26
  6. Step 6: Final answer
    x = 10,438.66

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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.