Home / 13,766.91-20,651.40-3,906.99

Finding the Fourth Proportional to 13,766.91, 20,651.40 and 3,906.99

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Solution

The fourth proportional to 13,766.91, 20,651.40 and 3,906.99 is: 5,860.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,766.91 : 20,651.40 = 3,906.99 : x
  2. Step 2: Convert to fraction form
    13,766.91/20,651.40 = 3,906.99/x
  3. Step 3: Cross multiply
    13,766.91x = 20,651.40 × 3,906.99
  4. Step 4: Simplify right side
    13,766.91x = 80,684,813.29
  5. Step 5: Solve for x
    x = 80,684,813.29/13,766.91
  6. Step 6: Final answer
    x = 5,860.78

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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.