Home / 11,721.10-17,577.60-3,398.86

Finding the Fourth Proportional to 11,721.10, 17,577.60 and 3,398.86

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Solution

The fourth proportional to 11,721.10, 17,577.60 and 3,398.86 is: 5,097.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.10 : 17,577.60 = 3,398.86 : x
  2. Step 2: Convert to fraction form
    11,721.10/17,577.60 = 3,398.86/x
  3. Step 3: Cross multiply
    11,721.10x = 17,577.60 × 3,398.86
  4. Step 4: Simplify right side
    11,721.10x = 59,743,801.54
  5. Step 5: Solve for x
    x = 59,743,801.54/11,721.10
  6. Step 6: Final answer
    x = 5,097.12

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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.