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Finding the Fourth Proportional to 21,727.57, 29,984.04 and 11,791.57

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Solution

The fourth proportional to 21,727.57, 29,984.04 and 11,791.57 is: 16,272.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,727.57 : 29,984.04 = 11,791.57 : x
  2. Step 2: Convert to fraction form
    21,727.57/29,984.04 = 11,791.57/x
  3. Step 3: Cross multiply
    21,727.57x = 29,984.04 × 11,791.57
  4. Step 4: Simplify right side
    21,727.57x = 353,558,906.54
  5. Step 5: Solve for x
    x = 353,558,906.54/21,727.57
  6. Step 6: Final answer
    x = 16,272.36

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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.