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Finding the Fourth Proportional to 21,963.96, 30,310.06 and 11,892.14

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Solution

The fourth proportional to 21,963.96, 30,310.06 and 11,892.14 is: 16,411.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,963.96 : 30,310.06 = 11,892.14 : x
  2. Step 2: Convert to fraction form
    21,963.96/30,310.06 = 11,892.14/x
  3. Step 3: Cross multiply
    21,963.96x = 30,310.06 × 11,892.14
  4. Step 4: Simplify right side
    21,963.96x = 360,451,476.93
  5. Step 5: Solve for x
    x = 360,451,476.93/21,963.96
  6. Step 6: Final answer
    x = 16,411.04

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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.