Home / 11,878.80-17,821.26-3,558.48

Finding the Fourth Proportional to 11,878.80, 17,821.26 and 3,558.48

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Solution

The fourth proportional to 11,878.80, 17,821.26 and 3,558.48 is: 5,338.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,878.80 : 17,821.26 = 3,558.48 : x
  2. Step 2: Convert to fraction form
    11,878.80/17,821.26 = 3,558.48/x
  3. Step 3: Cross multiply
    11,878.80x = 17,821.26 × 3,558.48
  4. Step 4: Simplify right side
    11,878.80x = 63,416,597.28
  5. Step 5: Solve for x
    x = 63,416,597.28/11,878.80
  6. Step 6: Final answer
    x = 5,338.64

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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.