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Finding the Fourth Proportional to 12,649.57, 18,959.77 and 6,793.88

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Solution

The fourth proportional to 12,649.57, 18,959.77 and 6,793.88 is: 10,182.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,649.57 : 18,959.77 = 6,793.88 : x
  2. Step 2: Convert to fraction form
    12,649.57/18,959.77 = 6,793.88/x
  3. Step 3: Cross multiply
    12,649.57x = 18,959.77 × 6,793.88
  4. Step 4: Simplify right side
    12,649.57x = 128,810,315.90
  5. Step 5: Solve for x
    x = 128,810,315.90/12,649.57
  6. Step 6: Final answer
    x = 10,182.98

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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.