Home / 11,919.67-17,881.40-4,129.09

Finding the Fourth Proportional to 11,919.67, 17,881.40 and 4,129.09

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Solution

The fourth proportional to 11,919.67, 17,881.40 and 4,129.09 is: 6,194.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.67 : 17,881.40 = 4,129.09 : x
  2. Step 2: Convert to fraction form
    11,919.67/17,881.40 = 4,129.09/x
  3. Step 3: Cross multiply
    11,919.67x = 17,881.40 × 4,129.09
  4. Step 4: Simplify right side
    11,919.67x = 73,833,909.93
  5. Step 5: Solve for x
    x = 73,833,909.93/11,919.67
  6. Step 6: Final answer
    x = 6,194.29

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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.