Home / 21,727.81-29,984.39-11,791.81

Finding the Fourth Proportional to 21,727.81, 29,984.39 and 11,791.81

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Solution

The fourth proportional to 21,727.81, 29,984.39 and 11,791.81 is: 16,272.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,727.81 : 29,984.39 = 11,791.81 : x
  2. Step 2: Convert to fraction form
    21,727.81/29,984.39 = 11,791.81/x
  3. Step 3: Cross multiply
    21,727.81x = 29,984.39 × 11,791.81
  4. Step 4: Simplify right side
    21,727.81x = 353,570,229.85
  5. Step 5: Solve for x
    x = 353,570,229.85/21,727.81
  6. Step 6: Final answer
    x = 16,272.70

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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.