Home / 13,974-20,961.36-3,585.84

Finding the Fourth Proportional to 13,974, 20,961.36 and 3,585.84

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Solution

The fourth proportional to 13,974, 20,961.36 and 3,585.84 is: 5,378.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,974 : 20,961.36 = 3,585.84 : x
  2. Step 2: Convert to fraction form
    13,974/20,961.36 = 3,585.84/x
  3. Step 3: Cross multiply
    13,974x = 20,961.36 × 3,585.84
  4. Step 4: Simplify right side
    13,974x = 75,164,083.14
  5. Step 5: Solve for x
    x = 75,164,083.14/13,974
  6. Step 6: Final answer
    x = 5,378.85

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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.