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Finding the Fourth Proportional to 21,067.11, 29,070.14 and 11,635.11

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Solution

The fourth proportional to 21,067.11, 29,070.14 and 11,635.11 is: 16,055.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.11 : 29,070.14 = 11,635.11 : x
  2. Step 2: Convert to fraction form
    21,067.11/29,070.14 = 11,635.11/x
  3. Step 3: Cross multiply
    21,067.11x = 29,070.14 × 11,635.11
  4. Step 4: Simplify right side
    21,067.11x = 338,234,218.44
  5. Step 5: Solve for x
    x = 338,234,218.44/21,067.11
  6. Step 6: Final answer
    x = 16,055.08

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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.