Home / 11,972.12-17,938.38-6,120.68

Finding the Fourth Proportional to 11,972.12, 17,938.38 and 6,120.68

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Solution

The fourth proportional to 11,972.12, 17,938.38 and 6,120.68 is: 9,170.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,972.12 : 17,938.38 = 6,120.68 : x
  2. Step 2: Convert to fraction form
    11,972.12/17,938.38 = 6,120.68/x
  3. Step 3: Cross multiply
    11,972.12x = 17,938.38 × 6,120.68
  4. Step 4: Simplify right side
    11,972.12x = 109,795,083.70
  5. Step 5: Solve for x
    x = 109,795,083.70/11,972.12
  6. Step 6: Final answer
    x = 9,170.90

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1.5x scale

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.