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Finding the Fourth Proportional to 20,563.92, 30,845.03 and 11,262.89

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Solution

The fourth proportional to 20,563.92, 30,845.03 and 11,262.89 is: 16,893.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.92 : 30,845.03 = 11,262.89 : x
  2. Step 2: Convert to fraction form
    20,563.92/30,845.03 = 11,262.89/x
  3. Step 3: Cross multiply
    20,563.92x = 30,845.03 × 11,262.89
  4. Step 4: Simplify right side
    20,563.92x = 347,404,179.94
  5. Step 5: Solve for x
    x = 347,404,179.94/20,563.92
  6. Step 6: Final answer
    x = 16,893.87

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Why These Related Problems?

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