Home / 28,656.30-39,540.31-16,716.66

Finding the Fourth Proportional to 28,656.30, 39,540.31 and 16,716.66

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Solution

The fourth proportional to 28,656.30, 39,540.31 and 16,716.66 is: 23,065.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,656.30 : 39,540.31 = 16,716.66 : x
  2. Step 2: Convert to fraction form
    28,656.30/39,540.31 = 16,716.66/x
  3. Step 3: Cross multiply
    28,656.30x = 39,540.31 × 16,716.66
  4. Step 4: Simplify right side
    28,656.30x = 660,981,918.56
  5. Step 5: Solve for x
    x = 660,981,918.56/28,656.30
  6. Step 6: Final answer
    x = 23,065.85

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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.