Home / 27,727.88-38,264.42-15,791.22

Finding the Fourth Proportional to 27,727.88, 38,264.42 and 15,791.22

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Solution

The fourth proportional to 27,727.88, 38,264.42 and 15,791.22 is: 21,791.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,727.88 : 38,264.42 = 15,791.22 : x
  2. Step 2: Convert to fraction form
    27,727.88/38,264.42 = 15,791.22/x
  3. Step 3: Cross multiply
    27,727.88x = 38,264.42 × 15,791.22
  4. Step 4: Simplify right side
    27,727.88x = 604,241,874.39
  5. Step 5: Solve for x
    x = 604,241,874.39/27,727.88
  6. Step 6: Final answer
    x = 21,791.85

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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.