Home / 13,286.85-18,335.97-7,318.73

Finding the Fourth Proportional to 13,286.85, 18,335.97 and 7,318.73

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Solution

The fourth proportional to 13,286.85, 18,335.97 and 7,318.73 is: 10,099.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.85 : 18,335.97 = 7,318.73 : x
  2. Step 2: Convert to fraction form
    13,286.85/18,335.97 = 7,318.73/x
  3. Step 3: Cross multiply
    13,286.85x = 18,335.97 × 7,318.73
  4. Step 4: Simplify right side
    13,286.85x = 134,195,922.04
  5. Step 5: Solve for x
    x = 134,195,922.04/13,286.85
  6. Step 6: Final answer
    x = 10,099.90

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1.5x scale

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.