Home / 12,146.92-18,220.40-3,381.83

Finding the Fourth Proportional to 12,146.92, 18,220.40 and 3,381.83

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Solution

The fourth proportional to 12,146.92, 18,220.40 and 3,381.83 is: 5,072.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,146.92 : 18,220.40 = 3,381.83 : x
  2. Step 2: Convert to fraction form
    12,146.92/18,220.40 = 3,381.83/x
  3. Step 3: Cross multiply
    12,146.92x = 18,220.40 × 3,381.83
  4. Step 4: Simplify right side
    12,146.92x = 61,618,295.33
  5. Step 5: Solve for x
    x = 61,618,295.33/12,146.92
  6. Step 6: Final answer
    x = 5,072.75

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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.