Home / 11,821.56-17,730.96-3,055.78

Finding the Fourth Proportional to 11,821.56, 17,730.96 and 3,055.78

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Solution

The fourth proportional to 11,821.56, 17,730.96 and 3,055.78 is: 4,583.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.56 : 17,730.96 = 3,055.78 : x
  2. Step 2: Convert to fraction form
    11,821.56/17,730.96 = 3,055.78/x
  3. Step 3: Cross multiply
    11,821.56x = 17,730.96 × 3,055.78
  4. Step 4: Simplify right side
    11,821.56x = 54,181,912.95
  5. Step 5: Solve for x
    x = 54,181,912.95/11,821.56
  6. Step 6: Final answer
    x = 4,583.31

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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.