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Finding the Fourth Proportional to 30,286.73, 41,813.08 and 20,248.40

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Solution

The fourth proportional to 30,286.73, 41,813.08 and 20,248.40 is: 27,954.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,286.73 : 41,813.08 = 20,248.40 : x
  2. Step 2: Convert to fraction form
    30,286.73/41,813.08 = 20,248.40/x
  3. Step 3: Cross multiply
    30,286.73x = 41,813.08 × 20,248.40
  4. Step 4: Simplify right side
    30,286.73x = 846,648,022.98
  5. Step 5: Solve for x
    x = 846,648,022.98/30,286.73
  6. Step 6: Final answer
    x = 27,954.42

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.