Home / 13,286.26-18,334.80-7,318.49

Finding the Fourth Proportional to 13,286.26, 18,334.80 and 7,318.49

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Solution

The fourth proportional to 13,286.26, 18,334.80 and 7,318.49 is: 10,099.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.26 : 18,334.80 = 7,318.49 : x
  2. Step 2: Convert to fraction form
    13,286.26/18,334.80 = 7,318.49/x
  3. Step 3: Cross multiply
    13,286.26x = 18,334.80 × 7,318.49
  4. Step 4: Simplify right side
    13,286.26x = 134,182,958.78
  5. Step 5: Solve for x
    x = 134,182,958.78/13,286.26
  6. Step 6: Final answer
    x = 10,099.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.