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Finding the Fourth Proportional to 18,794.11, 28,196.70 and 5,648.50

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Solution

The fourth proportional to 18,794.11, 28,196.70 and 5,648.50 is: 8,474.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,794.11 : 28,196.70 = 5,648.50 : x
  2. Step 2: Convert to fraction form
    18,794.11/28,196.70 = 5,648.50/x
  3. Step 3: Cross multiply
    18,794.11x = 28,196.70 × 5,648.50
  4. Step 4: Simplify right side
    18,794.11x = 159,269,059.95
  5. Step 5: Solve for x
    x = 159,269,059.95/18,794.11
  6. Step 6: Final answer
    x = 8,474.41

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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.