Home / 12,729.90-19,100.58-6,879.66

Finding the Fourth Proportional to 12,729.90, 19,100.58 and 6,879.66

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Solution

The fourth proportional to 12,729.90, 19,100.58 and 6,879.66 is: 10,322.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729.90 : 19,100.58 = 6,879.66 : x
  2. Step 2: Convert to fraction form
    12,729.90/19,100.58 = 6,879.66/x
  3. Step 3: Cross multiply
    12,729.90x = 19,100.58 × 6,879.66
  4. Step 4: Simplify right side
    12,729.90x = 131,405,496.20
  5. Step 5: Solve for x
    x = 131,405,496.20/12,729.90
  6. Step 6: Final answer
    x = 10,322.59

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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.