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Finding the Fourth Proportional to 12,238.88, 16,889.66 and 6,649.88

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Solution

The fourth proportional to 12,238.88, 16,889.66 and 6,649.88 is: 9,176.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,238.88 : 16,889.66 = 6,649.88 : x
  2. Step 2: Convert to fraction form
    12,238.88/16,889.66 = 6,649.88/x
  3. Step 3: Cross multiply
    12,238.88x = 16,889.66 × 6,649.88
  4. Step 4: Simplify right side
    12,238.88x = 112,314,094.54
  5. Step 5: Solve for x
    x = 112,314,094.54/12,238.88
  6. Step 6: Final answer
    x = 9,176.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.