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Finding the Fourth Proportional to 18,933, 28,402.86 and 7,833.66

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Solution

The fourth proportional to 18,933, 28,402.86 and 7,833.66 is: 11,751.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,933 : 28,402.86 = 7,833.66 : x
  2. Step 2: Convert to fraction form
    18,933/28,402.86 = 7,833.66/x
  3. Step 3: Cross multiply
    18,933x = 28,402.86 × 7,833.66
  4. Step 4: Simplify right side
    18,933x = 222,498,348.27
  5. Step 5: Solve for x
    x = 222,498,348.27/18,933
  6. Step 6: Final answer
    x = 11,751.88

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.