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Finding the Fourth Proportional to 21,067.52, 29,073.15 and 11,636.06

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Solution

The fourth proportional to 21,067.52, 29,073.15 and 11,636.06 is: 16,057.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.52 : 29,073.15 = 11,636.06 : x
  2. Step 2: Convert to fraction form
    21,067.52/29,073.15 = 11,636.06/x
  3. Step 3: Cross multiply
    21,067.52x = 29,073.15 × 11,636.06
  4. Step 4: Simplify right side
    21,067.52x = 338,296,772.42
  5. Step 5: Solve for x
    x = 338,296,772.42/21,067.52
  6. Step 6: Final answer
    x = 16,057.74

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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.