Home / 21,986.19-32,990.85-11,998.08

Finding the Fourth Proportional to 21,986.19, 32,990.85 and 11,998.08

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Solution

The fourth proportional to 21,986.19, 32,990.85 and 11,998.08 is: 18,003.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,986.19 : 32,990.85 = 11,998.08 : x
  2. Step 2: Convert to fraction form
    21,986.19/32,990.85 = 11,998.08/x
  3. Step 3: Cross multiply
    21,986.19x = 32,990.85 × 11,998.08
  4. Step 4: Simplify right side
    21,986.19x = 395,826,857.57
  5. Step 5: Solve for x
    x = 395,826,857.57/21,986.19
  6. Step 6: Final answer
    x = 18,003.43

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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.