Home / 19,982.97-27,586.47-12,431.73

Finding the Fourth Proportional to 19,982.97, 27,586.47 and 12,431.73

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Solution

The fourth proportional to 19,982.97, 27,586.47 and 12,431.73 is: 17,161.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,982.97 : 27,586.47 = 12,431.73 : x
  2. Step 2: Convert to fraction form
    19,982.97/27,586.47 = 12,431.73/x
  3. Step 3: Cross multiply
    19,982.97x = 27,586.47 × 12,431.73
  4. Step 4: Simplify right side
    19,982.97x = 342,947,546.69
  5. Step 5: Solve for x
    x = 342,947,546.69/19,982.97
  6. Step 6: Final answer
    x = 17,161.99

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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.