Home / 12,729.96-19,080.36-6,891.48

Finding the Fourth Proportional to 12,729.96, 19,080.36 and 6,891.48

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Solution

The fourth proportional to 12,729.96, 19,080.36 and 6,891.48 is: 10,329.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729.96 : 19,080.36 = 6,891.48 : x
  2. Step 2: Convert to fraction form
    12,729.96/19,080.36 = 6,891.48/x
  3. Step 3: Cross multiply
    12,729.96x = 19,080.36 × 6,891.48
  4. Step 4: Simplify right side
    12,729.96x = 131,491,919.33
  5. Step 5: Solve for x
    x = 131,491,919.33/12,729.96
  6. Step 6: Final answer
    x = 10,329.33

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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.