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Finding the Fourth Proportional to 11,950.20, 16,490.86 and 6,644.90

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Solution

The fourth proportional to 11,950.20, 16,490.86 and 6,644.90 is: 9,169.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,950.20 : 16,490.86 = 6,644.90 : x
  2. Step 2: Convert to fraction form
    11,950.20/16,490.86 = 6,644.90/x
  3. Step 3: Cross multiply
    11,950.20x = 16,490.86 × 6,644.90
  4. Step 4: Simplify right side
    11,950.20x = 109,580,115.61
  5. Step 5: Solve for x
    x = 109,580,115.61/11,950.20
  6. Step 6: Final answer
    x = 9,169.73

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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.