Home / 12,486.28-18,723.10-4,163.38

Finding the Fourth Proportional to 12,486.28, 18,723.10 and 4,163.38

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Solution

The fourth proportional to 12,486.28, 18,723.10 and 4,163.38 is: 6,242.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.28 : 18,723.10 = 4,163.38 : x
  2. Step 2: Convert to fraction form
    12,486.28/18,723.10 = 4,163.38/x
  3. Step 3: Cross multiply
    12,486.28x = 18,723.10 × 4,163.38
  4. Step 4: Simplify right side
    12,486.28x = 77,951,380.08
  5. Step 5: Solve for x
    x = 77,951,380.08/12,486.28
  6. Step 6: Final answer
    x = 6,242.96

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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.