Home / 19,781.33-27,285.94-12,229.97

Finding the Fourth Proportional to 19,781.33, 27,285.94 and 12,229.97

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Solution

The fourth proportional to 19,781.33, 27,285.94 and 12,229.97 is: 16,869.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,781.33 : 27,285.94 = 12,229.97 : x
  2. Step 2: Convert to fraction form
    19,781.33/27,285.94 = 12,229.97/x
  3. Step 3: Cross multiply
    19,781.33x = 27,285.94 × 12,229.97
  4. Step 4: Simplify right side
    19,781.33x = 333,706,227.62
  5. Step 5: Solve for x
    x = 333,706,227.62/19,781.33
  6. Step 6: Final answer
    x = 16,869.76

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1.5x scale

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.