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Finding the Fourth Proportional to 12,234, 16,883.28 and 6,645.36

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Solution

The fourth proportional to 12,234, 16,883.28 and 6,645.36 is: 9,170.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,234 : 16,883.28 = 6,645.36 : x
  2. Step 2: Convert to fraction form
    12,234/16,883.28 = 6,645.36/x
  3. Step 3: Cross multiply
    12,234x = 16,883.28 × 6,645.36
  4. Step 4: Simplify right side
    12,234x = 112,195,473.58
  5. Step 5: Solve for x
    x = 112,195,473.58/12,234
  6. Step 6: Final answer
    x = 9,170.79

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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.