Home / 20,786.87-31,190.73-9,694.43

Finding the Fourth Proportional to 20,786.87, 31,190.73 and 9,694.43

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Solution

The fourth proportional to 20,786.87, 31,190.73 and 9,694.43 is: 14,546.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.87 : 31,190.73 = 9,694.43 : x
  2. Step 2: Convert to fraction form
    20,786.87/31,190.73 = 9,694.43/x
  3. Step 3: Cross multiply
    20,786.87x = 31,190.73 × 9,694.43
  4. Step 4: Simplify right side
    20,786.87x = 302,376,462.96
  5. Step 5: Solve for x
    x = 302,376,462.96/20,786.87
  6. Step 6: Final answer
    x = 14,546.51

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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.