Home / 21,067.11-29,072.66-11,635.71

Finding the Fourth Proportional to 21,067.11, 29,072.66 and 11,635.71

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Solution

The fourth proportional to 21,067.11, 29,072.66 and 11,635.71 is: 16,057.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.11 : 29,072.66 = 11,635.71 : x
  2. Step 2: Convert to fraction form
    21,067.11/29,072.66 = 11,635.71/x
  3. Step 3: Cross multiply
    21,067.11x = 29,072.66 × 11,635.71
  4. Step 4: Simplify right side
    21,067.11x = 338,280,982.51
  5. Step 5: Solve for x
    x = 338,280,982.51/21,067.11
  6. Step 6: Final answer
    x = 16,057.30

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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.