Home / 13,286.89-19,933.78-3,926.53

Finding the Fourth Proportional to 13,286.89, 19,933.78 and 3,926.53

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Solution

The fourth proportional to 13,286.89, 19,933.78 and 3,926.53 is: 5,890.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.89 : 19,933.78 = 3,926.53 : x
  2. Step 2: Convert to fraction form
    13,286.89/19,933.78 = 3,926.53/x
  3. Step 3: Cross multiply
    13,286.89x = 19,933.78 × 3,926.53
  4. Step 4: Simplify right side
    13,286.89x = 78,270,585.18
  5. Step 5: Solve for x
    x = 78,270,585.18/13,286.89
  6. Step 6: Final answer
    x = 5,890.81

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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.