Home / 26,782.80-40,161.60-11,991.84

Finding the Fourth Proportional to 26,782.80, 40,161.60 and 11,991.84

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Solution

The fourth proportional to 26,782.80, 40,161.60 and 11,991.84 is: 17,982.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,782.80 : 40,161.60 = 11,991.84 : x
  2. Step 2: Convert to fraction form
    26,782.80/40,161.60 = 11,991.84/x
  3. Step 3: Cross multiply
    26,782.80x = 40,161.60 × 11,991.84
  4. Step 4: Simplify right side
    26,782.80x = 481,611,481.34
  5. Step 5: Solve for x
    x = 481,611,481.34/26,782.80
  6. Step 6: Final answer
    x = 17,982.12

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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.