Home / 12,986.06-19,481.51-5,195.48

Finding the Fourth Proportional to 12,986.06, 19,481.51 and 5,195.48

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Solution

The fourth proportional to 12,986.06, 19,481.51 and 5,195.48 is: 7,794.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.06 : 19,481.51 = 5,195.48 : x
  2. Step 2: Convert to fraction form
    12,986.06/19,481.51 = 5,195.48/x
  3. Step 3: Cross multiply
    12,986.06x = 19,481.51 × 5,195.48
  4. Step 4: Simplify right side
    12,986.06x = 101,215,698.17
  5. Step 5: Solve for x
    x = 101,215,698.17/12,986.06
  6. Step 6: Final answer
    x = 7,794.18

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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.