Home / 12,919.46-19,378.68-3,685.46

Finding the Fourth Proportional to 12,919.46, 19,378.68 and 3,685.46

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Solution

The fourth proportional to 12,919.46, 19,378.68 and 3,685.46 is: 5,528.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.46 : 19,378.68 = 3,685.46 : x
  2. Step 2: Convert to fraction form
    12,919.46/19,378.68 = 3,685.46/x
  3. Step 3: Cross multiply
    12,919.46x = 19,378.68 × 3,685.46
  4. Step 4: Simplify right side
    12,919.46x = 71,419,349.99
  5. Step 5: Solve for x
    x = 71,419,349.99/12,919.46
  6. Step 6: Final answer
    x = 5,528.04

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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.