Home / 11,945.32-17,919.90-5,020.20

Finding the Fourth Proportional to 11,945.32, 17,919.90 and 5,020.20

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Solution

The fourth proportional to 11,945.32, 17,919.90 and 5,020.20 is: 7,531.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,945.32 : 17,919.90 = 5,020.20 : x
  2. Step 2: Convert to fraction form
    11,945.32/17,919.90 = 5,020.20/x
  3. Step 3: Cross multiply
    11,945.32x = 17,919.90 × 5,020.20
  4. Step 4: Simplify right side
    11,945.32x = 89,961,481.98
  5. Step 5: Solve for x
    x = 89,961,481.98/11,945.32
  6. Step 6: Final answer
    x = 7,531.11

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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.