Home / 18,671.27-25,771.78-12,211.82

Finding the Fourth Proportional to 18,671.27, 25,771.78 and 12,211.82

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Solution

The fourth proportional to 18,671.27, 25,771.78 and 12,211.82 is: 16,855.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.27 : 25,771.78 = 12,211.82 : x
  2. Step 2: Convert to fraction form
    18,671.27/25,771.78 = 12,211.82/x
  3. Step 3: Cross multiply
    18,671.27x = 25,771.78 × 12,211.82
  4. Step 4: Simplify right side
    18,671.27x = 314,720,338.44
  5. Step 5: Solve for x
    x = 314,720,338.44/18,671.27
  6. Step 6: Final answer
    x = 16,855.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.