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Finding the Fourth Proportional to 27,408.78, 41,113.80 and 8,940.78

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Solution

The fourth proportional to 27,408.78, 41,113.80 and 8,940.78 is: 13,411.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,408.78 : 41,113.80 = 8,940.78 : x
  2. Step 2: Convert to fraction form
    27,408.78/41,113.80 = 8,940.78/x
  3. Step 3: Cross multiply
    27,408.78x = 41,113.80 × 8,940.78
  4. Step 4: Simplify right side
    27,408.78x = 367,589,440.76
  5. Step 5: Solve for x
    x = 367,589,440.76/27,408.78
  6. Step 6: Final answer
    x = 13,411.38

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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.