Home / 13,825.84-20,742.32-3,965.84

Finding the Fourth Proportional to 13,825.84, 20,742.32 and 3,965.84

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Solution

The fourth proportional to 13,825.84, 20,742.32 and 3,965.84 is: 5,949.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.84 : 20,742.32 = 3,965.84 : x
  2. Step 2: Convert to fraction form
    13,825.84/20,742.32 = 3,965.84/x
  3. Step 3: Cross multiply
    13,825.84x = 20,742.32 × 3,965.84
  4. Step 4: Simplify right side
    13,825.84x = 82,260,722.35
  5. Step 5: Solve for x
    x = 82,260,722.35/13,825.84
  6. Step 6: Final answer
    x = 5,949.78

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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.