Home / 20,843.73-31,257.29-12,084.80

Finding the Fourth Proportional to 20,843.73, 31,257.29 and 12,084.80

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Solution

The fourth proportional to 20,843.73, 31,257.29 and 12,084.80 is: 18,122.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,843.73 : 31,257.29 = 12,084.80 : x
  2. Step 2: Convert to fraction form
    20,843.73/31,257.29 = 12,084.80/x
  3. Step 3: Cross multiply
    20,843.73x = 31,257.29 × 12,084.80
  4. Step 4: Simplify right side
    20,843.73x = 377,737,972.12
  5. Step 5: Solve for x
    x = 377,737,972.12/20,843.73
  6. Step 6: Final answer
    x = 18,122.38

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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.