Home / 20,850.27-28,773.07-11,418.82

Finding the Fourth Proportional to 20,850.27, 28,773.07 and 11,418.82

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Solution

The fourth proportional to 20,850.27, 28,773.07 and 11,418.82 is: 15,757.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.27 : 28,773.07 = 11,418.82 : x
  2. Step 2: Convert to fraction form
    20,850.27/28,773.07 = 11,418.82/x
  3. Step 3: Cross multiply
    20,850.27x = 28,773.07 × 11,418.82
  4. Step 4: Simplify right side
    20,850.27x = 328,554,507.18
  5. Step 5: Solve for x
    x = 328,554,507.18/20,850.27
  6. Step 6: Final answer
    x = 15,757.81

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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.