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Finding the Fourth Proportional to 21,193.38, 31,793.58 and 7,154.73

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Solution

The fourth proportional to 21,193.38, 31,793.58 and 7,154.73 is: 10,733.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,193.38 : 31,793.58 = 7,154.73 : x
  2. Step 2: Convert to fraction form
    21,193.38/31,793.58 = 7,154.73/x
  3. Step 3: Cross multiply
    21,193.38x = 31,793.58 × 7,154.73
  4. Step 4: Simplify right side
    21,193.38x = 227,474,480.63
  5. Step 5: Solve for x
    x = 227,474,480.63/21,193.38
  6. Step 6: Final answer
    x = 10,733.28

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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.