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Finding the Fourth Proportional to 21,067, 29,072.46 and 11,636.17

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Solution

The fourth proportional to 21,067, 29,072.46 and 11,636.17 is: 16,057.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067 : 29,072.46 = 11,636.17 : x
  2. Step 2: Convert to fraction form
    21,067/29,072.46 = 11,636.17/x
  3. Step 3: Cross multiply
    21,067x = 29,072.46 × 11,636.17
  4. Step 4: Simplify right side
    21,067x = 338,292,086.88
  5. Step 5: Solve for x
    x = 338,292,086.88/21,067
  6. Step 6: Final answer
    x = 16,057.91

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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.