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Finding the Fourth Proportional to 21,712.44, 29,963.04 and 11,776.44

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Solution

The fourth proportional to 21,712.44, 29,963.04 and 11,776.44 is: 16,251.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,712.44 : 29,963.04 = 11,776.44 : x
  2. Step 2: Convert to fraction form
    21,712.44/29,963.04 = 11,776.44/x
  3. Step 3: Cross multiply
    21,712.44x = 29,963.04 × 11,776.44
  4. Step 4: Simplify right side
    21,712.44x = 352,857,942.78
  5. Step 5: Solve for x
    x = 352,857,942.78/21,712.44
  6. Step 6: Final answer
    x = 16,251.42

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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.