Home / 21,163.56-29,205.72-11,731.92

Finding the Fourth Proportional to 21,163.56, 29,205.72 and 11,731.92

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Solution

The fourth proportional to 21,163.56, 29,205.72 and 11,731.92 is: 16,190.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.56 : 29,205.72 = 11,731.92 : x
  2. Step 2: Convert to fraction form
    21,163.56/29,205.72 = 11,731.92/x
  3. Step 3: Cross multiply
    21,163.56x = 29,205.72 × 11,731.92
  4. Step 4: Simplify right side
    21,163.56x = 342,639,170.58
  5. Step 5: Solve for x
    x = 342,639,170.58/21,163.56
  6. Step 6: Final answer
    x = 16,190.05

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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.