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Finding the Fourth Proportional to 20,604.45, 30,893.02 and 7,455.11

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Solution

The fourth proportional to 20,604.45, 30,893.02 and 7,455.11 is: 11,177.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,604.45 : 30,893.02 = 7,455.11 : x
  2. Step 2: Convert to fraction form
    20,604.45/30,893.02 = 7,455.11/x
  3. Step 3: Cross multiply
    20,604.45x = 30,893.02 × 7,455.11
  4. Step 4: Simplify right side
    20,604.45x = 230,310,862.33
  5. Step 5: Solve for x
    x = 230,310,862.33/20,604.45
  6. Step 6: Final answer
    x = 11,177.72

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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.