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Finding the Fourth Proportional to 18,986.67, 26,201.96 and 11,029.41

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Solution

The fourth proportional to 18,986.67, 26,201.96 and 11,029.41 is: 15,220.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,986.67 : 26,201.96 = 11,029.41 : x
  2. Step 2: Convert to fraction form
    18,986.67/26,201.96 = 11,029.41/x
  3. Step 3: Cross multiply
    18,986.67x = 26,201.96 × 11,029.41
  4. Step 4: Simplify right side
    18,986.67x = 288,992,159.64
  5. Step 5: Solve for x
    x = 288,992,159.64/18,986.67
  6. Step 6: Final answer
    x = 15,220.79

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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.