Home / 18,986.18-28,469.96-11,090.68

Finding the Fourth Proportional to 18,986.18, 28,469.96 and 11,090.68

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Solution

The fourth proportional to 18,986.18, 28,469.96 and 11,090.68 is: 16,630.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,986.18 : 28,469.96 = 11,090.68 : x
  2. Step 2: Convert to fraction form
    18,986.18/28,469.96 = 11,090.68/x
  3. Step 3: Cross multiply
    18,986.18x = 28,469.96 × 11,090.68
  4. Step 4: Simplify right side
    18,986.18x = 315,751,215.97
  5. Step 5: Solve for x
    x = 315,751,215.97/18,986.18
  6. Step 6: Final answer
    x = 16,630.58

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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.