Home / 21,163.30-29,203.29-11,731.66

Finding the Fourth Proportional to 21,163.30, 29,203.29 and 11,731.66

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Solution

The fourth proportional to 21,163.30, 29,203.29 and 11,731.66 is: 16,188.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.30 : 29,203.29 = 11,731.66 : x
  2. Step 2: Convert to fraction form
    21,163.30/29,203.29 = 11,731.66/x
  3. Step 3: Cross multiply
    21,163.30x = 29,203.29 × 11,731.66
  4. Step 4: Simplify right side
    21,163.30x = 342,603,069.16
  5. Step 5: Solve for x
    x = 342,603,069.16/21,163.30
  6. Step 6: Final answer
    x = 16,188.55

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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.