Home / 13,633.80-20,429.10-8,694.60

Finding the Fourth Proportional to 13,633.80, 20,429.10 and 8,694.60

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Solution

The fourth proportional to 13,633.80, 20,429.10 and 8,694.60 is: 13,028.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,633.80 : 20,429.10 = 8,694.60 : x
  2. Step 2: Convert to fraction form
    13,633.80/20,429.10 = 8,694.60/x
  3. Step 3: Cross multiply
    13,633.80x = 20,429.10 × 8,694.60
  4. Step 4: Simplify right side
    13,633.80x = 177,622,852.86
  5. Step 5: Solve for x
    x = 177,622,852.86/13,633.80
  6. Step 6: Final answer
    x = 13,028.13

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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.