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Finding the Fourth Proportional to 12,693.62, 19,042.49 and 3,926.50

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Solution

The fourth proportional to 12,693.62, 19,042.49 and 3,926.50 is: 5,890.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,693.62 : 19,042.49 = 3,926.50 : x
  2. Step 2: Convert to fraction form
    12,693.62/19,042.49 = 3,926.50/x
  3. Step 3: Cross multiply
    12,693.62x = 19,042.49 × 3,926.50
  4. Step 4: Simplify right side
    12,693.62x = 74,770,336.99
  5. Step 5: Solve for x
    x = 74,770,336.99/12,693.62
  6. Step 6: Final answer
    x = 5,890.39

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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.