Home / 12,778.24-19,159.14-5,380.70

Finding the Fourth Proportional to 12,778.24, 19,159.14 and 5,380.70

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Solution

The fourth proportional to 12,778.24, 19,159.14 and 5,380.70 is: 8,067.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.24 : 19,159.14 = 5,380.70 : x
  2. Step 2: Convert to fraction form
    12,778.24/19,159.14 = 5,380.70/x
  3. Step 3: Cross multiply
    12,778.24x = 19,159.14 × 5,380.70
  4. Step 4: Simplify right side
    12,778.24x = 103,089,584.60
  5. Step 5: Solve for x
    x = 103,089,584.60/12,778.24
  6. Step 6: Final answer
    x = 8,067.59

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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.