Home / 11,961.72-17,942.58-5,720.26

Finding the Fourth Proportional to 11,961.72, 17,942.58 and 5,720.26

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Solution

The fourth proportional to 11,961.72, 17,942.58 and 5,720.26 is: 8,580.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,961.72 : 17,942.58 = 5,720.26 : x
  2. Step 2: Convert to fraction form
    11,961.72/17,942.58 = 5,720.26/x
  3. Step 3: Cross multiply
    11,961.72x = 17,942.58 × 5,720.26
  4. Step 4: Simplify right side
    11,961.72x = 102,636,222.67
  5. Step 5: Solve for x
    x = 102,636,222.67/11,961.72
  6. Step 6: Final answer
    x = 8,580.39

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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.