Home / 21,141.97-29,174.20-12,183.46

Finding the Fourth Proportional to 21,141.97, 29,174.20 and 12,183.46

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Solution

The fourth proportional to 21,141.97, 29,174.20 and 12,183.46 is: 16,812.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141.97 : 29,174.20 = 12,183.46 : x
  2. Step 2: Convert to fraction form
    21,141.97/29,174.20 = 12,183.46/x
  3. Step 3: Cross multiply
    21,141.97x = 29,174.20 × 12,183.46
  4. Step 4: Simplify right side
    21,141.97x = 355,442,698.73
  5. Step 5: Solve for x
    x = 355,442,698.73/21,141.97
  6. Step 6: Final answer
    x = 16,812.18

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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.