Home / 20,658.20-30,977.16-6,614.61

Finding the Fourth Proportional to 20,658.20, 30,977.16 and 6,614.61

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Solution

The fourth proportional to 20,658.20, 30,977.16 and 6,614.61 is: 9,918.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.20 : 30,977.16 = 6,614.61 : x
  2. Step 2: Convert to fraction form
    20,658.20/30,977.16 = 6,614.61/x
  3. Step 3: Cross multiply
    20,658.20x = 30,977.16 × 6,614.61
  4. Step 4: Simplify right side
    20,658.20x = 204,901,832.31
  5. Step 5: Solve for x
    x = 204,901,832.31/20,658.20
  6. Step 6: Final answer
    x = 9,918.67

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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.