Home / 21,163.24-29,203.80-11,731

Finding the Fourth Proportional to 21,163.24, 29,203.80 and 11,731

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Solution

The fourth proportional to 21,163.24, 29,203.80 and 11,731 is: 16,187.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.24 : 29,203.80 = 11,731 : x
  2. Step 2: Convert to fraction form
    21,163.24/29,203.80 = 11,731/x
  3. Step 3: Cross multiply
    21,163.24x = 29,203.80 × 11,731
  4. Step 4: Simplify right side
    21,163.24x = 342,589,777.80
  5. Step 5: Solve for x
    x = 342,589,777.80/21,163.24
  6. Step 6: Final answer
    x = 16,187.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.