Home / 11,418.70-17,129.10-4,491.58

Finding the Fourth Proportional to 11,418.70, 17,129.10 and 4,491.58

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Solution

The fourth proportional to 11,418.70, 17,129.10 and 4,491.58 is: 6,737.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,418.70 : 17,129.10 = 4,491.58 : x
  2. Step 2: Convert to fraction form
    11,418.70/17,129.10 = 4,491.58/x
  3. Step 3: Cross multiply
    11,418.70x = 17,129.10 × 4,491.58
  4. Step 4: Simplify right side
    11,418.70x = 76,936,722.98
  5. Step 5: Solve for x
    x = 76,936,722.98/11,418.70
  6. Step 6: Final answer
    x = 6,737.78

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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.