Home / 18,824.12-28,235.30-7,728.06

Finding the Fourth Proportional to 18,824.12, 28,235.30 and 7,728.06

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Solution

The fourth proportional to 18,824.12, 28,235.30 and 7,728.06 is: 11,591.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,824.12 : 28,235.30 = 7,728.06 : x
  2. Step 2: Convert to fraction form
    18,824.12/28,235.30 = 7,728.06/x
  3. Step 3: Cross multiply
    18,824.12x = 28,235.30 × 7,728.06
  4. Step 4: Simplify right side
    18,824.12x = 218,204,053.88
  5. Step 5: Solve for x
    x = 218,204,053.88/18,824.12
  6. Step 6: Final answer
    x = 11,591.73

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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.