Home / 21,169.37-31,760.22-9,479.85

Finding the Fourth Proportional to 21,169.37, 31,760.22 and 9,479.85

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Solution

The fourth proportional to 21,169.37, 31,760.22 and 9,479.85 is: 14,222.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,169.37 : 31,760.22 = 9,479.85 : x
  2. Step 2: Convert to fraction form
    21,169.37/31,760.22 = 9,479.85/x
  3. Step 3: Cross multiply
    21,169.37x = 31,760.22 × 9,479.85
  4. Step 4: Simplify right side
    21,169.37x = 301,082,121.57
  5. Step 5: Solve for x
    x = 301,082,121.57/21,169.37
  6. Step 6: Final answer
    x = 14,222.54

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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.