Home / 22,731.18-31,371.48-12,660.45

Finding the Fourth Proportional to 22,731.18, 31,371.48 and 12,660.45

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Solution

The fourth proportional to 22,731.18, 31,371.48 and 12,660.45 is: 17,472.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,731.18 : 31,371.48 = 12,660.45 : x
  2. Step 2: Convert to fraction form
    22,731.18/31,371.48 = 12,660.45/x
  3. Step 3: Cross multiply
    22,731.18x = 31,371.48 × 12,660.45
  4. Step 4: Simplify right side
    22,731.18x = 397,177,053.97
  5. Step 5: Solve for x
    x = 397,177,053.97/22,731.18
  6. Step 6: Final answer
    x = 17,472.79

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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.