Home / 21,104.46-31,645-8,633.24

Finding the Fourth Proportional to 21,104.46, 31,645 and 8,633.24

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Solution

The fourth proportional to 21,104.46, 31,645 and 8,633.24 is: 12,945.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,104.46 : 31,645 = 8,633.24 : x
  2. Step 2: Convert to fraction form
    21,104.46/31,645 = 8,633.24/x
  3. Step 3: Cross multiply
    21,104.46x = 31,645 × 8,633.24
  4. Step 4: Simplify right side
    21,104.46x = 273,198,879.80
  5. Step 5: Solve for x
    x = 273,198,879.80/21,104.46
  6. Step 6: Final answer
    x = 12,945.08

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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.