Home / 21,163.73-31,745.91-8,012.57

Finding the Fourth Proportional to 21,163.73, 31,745.91 and 8,012.57

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Solution

The fourth proportional to 21,163.73, 31,745.91 and 8,012.57 is: 12,018.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.73 : 31,745.91 = 8,012.57 : x
  2. Step 2: Convert to fraction form
    21,163.73/31,745.91 = 8,012.57/x
  3. Step 3: Cross multiply
    21,163.73x = 31,745.91 × 8,012.57
  4. Step 4: Simplify right side
    21,163.73x = 254,366,326.09
  5. Step 5: Solve for x
    x = 254,366,326.09/21,163.73
  6. Step 6: Final answer
    x = 12,018.97

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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.