Home / 18,863.20-26,040.45-11,791.90

Finding the Fourth Proportional to 18,863.20, 26,040.45 and 11,791.90

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Solution

The fourth proportional to 18,863.20, 26,040.45 and 11,791.90 is: 16,278.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863.20 : 26,040.45 = 11,791.90 : x
  2. Step 2: Convert to fraction form
    18,863.20/26,040.45 = 11,791.90/x
  3. Step 3: Cross multiply
    18,863.20x = 26,040.45 × 11,791.90
  4. Step 4: Simplify right side
    18,863.20x = 307,066,382.36
  5. Step 5: Solve for x
    x = 307,066,382.36/18,863.20
  6. Step 6: Final answer
    x = 16,278.59

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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.