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Finding the Fourth Proportional to 22,324.97, 30,811.28 and 12,891.71

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Solution

The fourth proportional to 22,324.97, 30,811.28 and 12,891.71 is: 17,792.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,324.97 : 30,811.28 = 12,891.71 : x
  2. Step 2: Convert to fraction form
    22,324.97/30,811.28 = 12,891.71/x
  3. Step 3: Cross multiply
    22,324.97x = 30,811.28 × 12,891.71
  4. Step 4: Simplify right side
    22,324.97x = 397,209,867.97
  5. Step 5: Solve for x
    x = 397,209,867.97/22,324.97
  6. Step 6: Final answer
    x = 17,792.18

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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.