Home / 11,997.30-17,960.40-8,891.25

Finding the Fourth Proportional to 11,997.30, 17,960.40 and 8,891.25

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Solution

The fourth proportional to 11,997.30, 17,960.40 and 8,891.25 is: 13,310.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,997.30 : 17,960.40 = 8,891.25 : x
  2. Step 2: Convert to fraction form
    11,997.30/17,960.40 = 8,891.25/x
  3. Step 3: Cross multiply
    11,997.30x = 17,960.40 × 8,891.25
  4. Step 4: Simplify right side
    11,997.30x = 159,690,406.50
  5. Step 5: Solve for x
    x = 159,690,406.50/11,997.30
  6. Step 6: Final answer
    x = 13,310.53

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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.