Home / 13,286.42-18,335.79-7,318.65

Finding the Fourth Proportional to 13,286.42, 18,335.79 and 7,318.65

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Solution

The fourth proportional to 13,286.42, 18,335.79 and 7,318.65 is: 10,100.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.42 : 18,335.79 = 7,318.65 : x
  2. Step 2: Convert to fraction form
    13,286.42/18,335.79 = 7,318.65/x
  3. Step 3: Cross multiply
    13,286.42x = 18,335.79 × 7,318.65
  4. Step 4: Simplify right side
    13,286.42x = 134,193,229.48
  5. Step 5: Solve for x
    x = 134,193,229.48/13,286.42
  6. Step 6: Final answer
    x = 10,100.03

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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.