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Finding the Fourth Proportional to 12,753.90, 19,125.99 and 3,867.39

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Solution

The fourth proportional to 12,753.90, 19,125.99 and 3,867.39 is: 5,799.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,753.90 : 19,125.99 = 3,867.39 : x
  2. Step 2: Convert to fraction form
    12,753.90/19,125.99 = 3,867.39/x
  3. Step 3: Cross multiply
    12,753.90x = 19,125.99 × 3,867.39
  4. Step 4: Simplify right side
    12,753.90x = 73,967,662.47
  5. Step 5: Solve for x
    x = 73,967,662.47/12,753.90
  6. Step 6: Final answer
    x = 5,799.61

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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.