Home / 12,739.62-19,109.56-3,974.60

Finding the Fourth Proportional to 12,739.62, 19,109.56 and 3,974.60

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Solution

The fourth proportional to 12,739.62, 19,109.56 and 3,974.60 is: 5,961.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.62 : 19,109.56 = 3,974.60 : x
  2. Step 2: Convert to fraction form
    12,739.62/19,109.56 = 3,974.60/x
  3. Step 3: Cross multiply
    12,739.62x = 19,109.56 × 3,974.60
  4. Step 4: Simplify right side
    12,739.62x = 75,952,857.18
  5. Step 5: Solve for x
    x = 75,952,857.18/12,739.62
  6. Step 6: Final answer
    x = 5,961.94

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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.