Home / 18,667.11-28,003.30-6,979.22

Finding the Fourth Proportional to 18,667.11, 28,003.30 and 6,979.22

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Solution

The fourth proportional to 18,667.11, 28,003.30 and 6,979.22 is: 10,469.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,667.11 : 28,003.30 = 6,979.22 : x
  2. Step 2: Convert to fraction form
    18,667.11/28,003.30 = 6,979.22/x
  3. Step 3: Cross multiply
    18,667.11x = 28,003.30 × 6,979.22
  4. Step 4: Simplify right side
    18,667.11x = 195,441,178.23
  5. Step 5: Solve for x
    x = 195,441,178.23/18,667.11
  6. Step 6: Final answer
    x = 10,469.81

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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.