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Finding the Fourth Proportional to 18,155.88, 27,233.11 and 5,007.89

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Solution

The fourth proportional to 18,155.88, 27,233.11 and 5,007.89 is: 7,511.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,155.88 : 27,233.11 = 5,007.89 : x
  2. Step 2: Convert to fraction form
    18,155.88/27,233.11 = 5,007.89/x
  3. Step 3: Cross multiply
    18,155.88x = 27,233.11 × 5,007.89
  4. Step 4: Simplify right side
    18,155.88x = 136,380,493.58
  5. Step 5: Solve for x
    x = 136,380,493.58/18,155.88
  6. Step 6: Final answer
    x = 7,511.64

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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.