Home / 12,739.74-19,109.27-3,379.79

Finding the Fourth Proportional to 12,739.74, 19,109.27 and 3,379.79

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Solution

The fourth proportional to 12,739.74, 19,109.27 and 3,379.79 is: 5,069.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.74 : 19,109.27 = 3,379.79 : x
  2. Step 2: Convert to fraction form
    12,739.74/19,109.27 = 3,379.79/x
  3. Step 3: Cross multiply
    12,739.74x = 19,109.27 × 3,379.79
  4. Step 4: Simplify right side
    12,739.74x = 64,585,207.21
  5. Step 5: Solve for x
    x = 64,585,207.21/12,739.74
  6. Step 6: Final answer
    x = 5,069.59

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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.