Home / 21,137.66-29,163.36-12,183.94

Finding the Fourth Proportional to 21,137.66, 29,163.36 and 12,183.94

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Solution

The fourth proportional to 21,137.66, 29,163.36 and 12,183.94 is: 16,810.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.66 : 29,163.36 = 12,183.94 : x
  2. Step 2: Convert to fraction form
    21,137.66/29,163.36 = 12,183.94/x
  3. Step 3: Cross multiply
    21,137.66x = 29,163.36 × 12,183.94
  4. Step 4: Simplify right side
    21,137.66x = 355,324,628.44
  5. Step 5: Solve for x
    x = 355,324,628.44/21,137.66
  6. Step 6: Final answer
    x = 16,810.03

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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.