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Finding the Fourth Proportional to 12,680.52, 19,014.30 and 6,760.80

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Solution

The fourth proportional to 12,680.52, 19,014.30 and 6,760.80 is: 10,137.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,680.52 : 19,014.30 = 6,760.80 : x
  2. Step 2: Convert to fraction form
    12,680.52/19,014.30 = 6,760.80/x
  3. Step 3: Cross multiply
    12,680.52x = 19,014.30 × 6,760.80
  4. Step 4: Simplify right side
    12,680.52x = 128,551,879.44
  5. Step 5: Solve for x
    x = 128,551,879.44/12,680.52
  6. Step 6: Final answer
    x = 10,137.75

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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.