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Finding the Fourth Proportional to 12,239.96, 16,891.08 and 6,650.96

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Solution

The fourth proportional to 12,239.96, 16,891.08 and 6,650.96 is: 9,178.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.96 : 16,891.08 = 6,650.96 : x
  2. Step 2: Convert to fraction form
    12,239.96/16,891.08 = 6,650.96/x
  3. Step 3: Cross multiply
    12,239.96x = 16,891.08 × 6,650.96
  4. Step 4: Simplify right side
    12,239.96x = 112,341,897.44
  5. Step 5: Solve for x
    x = 112,341,897.44/12,239.96
  6. Step 6: Final answer
    x = 9,178.29

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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.