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Finding the Fourth Proportional to 12,235, 16,884.32 and 6,646

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Solution

The fourth proportional to 12,235, 16,884.32 and 6,646 is: 9,171.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,235 : 16,884.32 = 6,646 : x
  2. Step 2: Convert to fraction form
    12,235/16,884.32 = 6,646/x
  3. Step 3: Cross multiply
    12,235x = 16,884.32 × 6,646
  4. Step 4: Simplify right side
    12,235x = 112,213,190.72
  5. Step 5: Solve for x
    x = 112,213,190.72/12,235
  6. Step 6: Final answer
    x = 9,171.49

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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.