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Finding the Fourth Proportional to 15,163.94, 20,926.02 and 8,449.85

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Solution

The fourth proportional to 15,163.94, 20,926.02 and 8,449.85 is: 11,660.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,163.94 : 20,926.02 = 8,449.85 : x
  2. Step 2: Convert to fraction form
    15,163.94/20,926.02 = 8,449.85/x
  3. Step 3: Cross multiply
    15,163.94x = 20,926.02 × 8,449.85
  4. Step 4: Simplify right side
    15,163.94x = 176,821,735.63
  5. Step 5: Solve for x
    x = 176,821,735.63/15,163.94
  6. Step 6: Final answer
    x = 11,660.67

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