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Finding the Fourth Proportional to 12,269.71, 16,932.87 and 7,236.88

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Solution

The fourth proportional to 12,269.71, 16,932.87 and 7,236.88 is: 9,987.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,269.71 : 16,932.87 = 7,236.88 : x
  2. Step 2: Convert to fraction form
    12,269.71/16,932.87 = 7,236.88/x
  3. Step 3: Cross multiply
    12,269.71x = 16,932.87 × 7,236.88
  4. Step 4: Simplify right side
    12,269.71x = 122,541,063.58
  5. Step 5: Solve for x
    x = 122,541,063.58/12,269.71
  6. Step 6: Final answer
    x = 9,987.29

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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.