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Finding the Fourth Proportional to 20,495.27, 30,736.96 and 8,651.67

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Solution

The fourth proportional to 20,495.27, 30,736.96 and 8,651.67 is: 12,975.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,495.27 : 30,736.96 = 8,651.67 : x
  2. Step 2: Convert to fraction form
    20,495.27/30,736.96 = 8,651.67/x
  3. Step 3: Cross multiply
    20,495.27x = 30,736.96 × 8,651.67
  4. Step 4: Simplify right side
    20,495.27x = 265,926,101.78
  5. Step 5: Solve for x
    x = 265,926,101.78/20,495.27
  6. Step 6: Final answer
    x = 12,975.00

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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.