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Finding the Fourth Proportional to 18,620.03, 27,930.03 and 5,472.39

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Solution

The fourth proportional to 18,620.03, 27,930.03 and 5,472.39 is: 8,208.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.03 : 27,930.03 = 5,472.39 : x
  2. Step 2: Convert to fraction form
    18,620.03/27,930.03 = 5,472.39/x
  3. Step 3: Cross multiply
    18,620.03x = 27,930.03 × 5,472.39
  4. Step 4: Simplify right side
    18,620.03x = 152,844,003.19
  5. Step 5: Solve for x
    x = 152,844,003.19/18,620.03
  6. Step 6: Final answer
    x = 8,208.58

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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.