Home / 21,727.68-29,983.86-11,791.68

Finding the Fourth Proportional to 21,727.68, 29,983.86 and 11,791.68

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Solution

The fourth proportional to 21,727.68, 29,983.86 and 11,791.68 is: 16,272.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,727.68 : 29,983.86 = 11,791.68 : x
  2. Step 2: Convert to fraction form
    21,727.68/29,983.86 = 11,791.68/x
  3. Step 3: Cross multiply
    21,727.68x = 29,983.86 × 11,791.68
  4. Step 4: Simplify right side
    21,727.68x = 353,560,082.28
  5. Step 5: Solve for x
    x = 353,560,082.28/21,727.68
  6. Step 6: Final answer
    x = 16,272.33

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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.