Home / 11,990.12-16,540.49-8,012.21

Finding the Fourth Proportional to 11,990.12, 16,540.49 and 8,012.21

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Solution

The fourth proportional to 11,990.12, 16,540.49 and 8,012.21 is: 11,052.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.12 : 16,540.49 = 8,012.21 : x
  2. Step 2: Convert to fraction form
    11,990.12/16,540.49 = 8,012.21/x
  3. Step 3: Cross multiply
    11,990.12x = 16,540.49 × 8,012.21
  4. Step 4: Simplify right side
    11,990.12x = 132,525,839.32
  5. Step 5: Solve for x
    x = 132,525,839.32/11,990.12
  6. Step 6: Final answer
    x = 11,052.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.