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Finding the Fourth Proportional to 21,794.97, 30,076.20 and 12,363.48

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Solution

The fourth proportional to 21,794.97, 30,076.20 and 12,363.48 is: 17,061.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,794.97 : 30,076.20 = 12,363.48 : x
  2. Step 2: Convert to fraction form
    21,794.97/30,076.20 = 12,363.48/x
  3. Step 3: Cross multiply
    21,794.97x = 30,076.20 × 12,363.48
  4. Step 4: Simplify right side
    21,794.97x = 371,846,497.18
  5. Step 5: Solve for x
    x = 371,846,497.18/21,794.97
  6. Step 6: Final answer
    x = 17,061.12

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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.