Home / 21,691.14-32,550.66-8,544.12

Finding the Fourth Proportional to 21,691.14, 32,550.66 and 8,544.12

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Solution

The fourth proportional to 21,691.14, 32,550.66 and 8,544.12 is: 12,821.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,691.14 : 32,550.66 = 8,544.12 : x
  2. Step 2: Convert to fraction form
    21,691.14/32,550.66 = 8,544.12/x
  3. Step 3: Cross multiply
    21,691.14x = 32,550.66 × 8,544.12
  4. Step 4: Simplify right side
    21,691.14x = 278,116,745.12
  5. Step 5: Solve for x
    x = 278,116,745.12/21,691.14
  6. Step 6: Final answer
    x = 12,821.67

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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.