Home / 15,764.20-23,634.30-7,978.60

Finding the Fourth Proportional to 15,764.20, 23,634.30 and 7,978.60

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Solution

The fourth proportional to 15,764.20, 23,634.30 and 7,978.60 is: 11,961.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,764.20 : 23,634.30 = 7,978.60 : x
  2. Step 2: Convert to fraction form
    15,764.20/23,634.30 = 7,978.60/x
  3. Step 3: Cross multiply
    15,764.20x = 23,634.30 × 7,978.60
  4. Step 4: Simplify right side
    15,764.20x = 188,568,625.98
  5. Step 5: Solve for x
    x = 188,568,625.98/15,764.20
  6. Step 6: Final answer
    x = 11,961.83

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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.