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Finding the Fourth Proportional to 12,927.87, 19,391.81 and 3,693.87

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Solution

The fourth proportional to 12,927.87, 19,391.81 and 3,693.87 is: 5,540.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,927.87 : 19,391.81 = 3,693.87 : x
  2. Step 2: Convert to fraction form
    12,927.87/19,391.81 = 3,693.87/x
  3. Step 3: Cross multiply
    12,927.87x = 19,391.81 × 3,693.87
  4. Step 4: Simplify right side
    12,927.87x = 71,630,806.74
  5. Step 5: Solve for x
    x = 71,630,806.74/12,927.87
  6. Step 6: Final answer
    x = 5,540.81

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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.