Home / 20,754.88-31,104.62-11,380.74

Finding the Fourth Proportional to 20,754.88, 31,104.62 and 11,380.74

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Solution

The fourth proportional to 20,754.88, 31,104.62 and 11,380.74 is: 17,055.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.88 : 31,104.62 = 11,380.74 : x
  2. Step 2: Convert to fraction form
    20,754.88/31,104.62 = 11,380.74/x
  3. Step 3: Cross multiply
    20,754.88x = 31,104.62 × 11,380.74
  4. Step 4: Simplify right side
    20,754.88x = 353,993,593.02
  5. Step 5: Solve for x
    x = 353,993,593.02/20,754.88
  6. Step 6: Final answer
    x = 17,055.92

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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.