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Finding the Fourth Proportional to 27,379.78, 41,069.70 and 8,911.78

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Solution

The fourth proportional to 27,379.78, 41,069.70 and 8,911.78 is: 13,367.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,379.78 : 41,069.70 = 8,911.78 : x
  2. Step 2: Convert to fraction form
    27,379.78/41,069.70 = 8,911.78/x
  3. Step 3: Cross multiply
    27,379.78x = 41,069.70 × 8,911.78
  4. Step 4: Simplify right side
    27,379.78x = 366,004,131.07
  5. Step 5: Solve for x
    x = 366,004,131.07/27,379.78
  6. Step 6: Final answer
    x = 13,367.68

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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.