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Finding the Fourth Proportional to 12,269.88, 16,932.45 and 6,680.88

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Solution

The fourth proportional to 12,269.88, 16,932.45 and 6,680.88 is: 9,219.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,269.88 : 16,932.45 = 6,680.88 : x
  2. Step 2: Convert to fraction form
    12,269.88/16,932.45 = 6,680.88/x
  3. Step 3: Cross multiply
    12,269.88x = 16,932.45 × 6,680.88
  4. Step 4: Simplify right side
    12,269.88x = 113,123,666.56
  5. Step 5: Solve for x
    x = 113,123,666.56/12,269.88
  6. Step 6: Final answer
    x = 9,219.62

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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.