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Finding the Fourth Proportional to 11,917.76, 16,447.07 and 6,612.62

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Solution

The fourth proportional to 11,917.76, 16,447.07 and 6,612.62 is: 9,125.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,917.76 : 16,447.07 = 6,612.62 : x
  2. Step 2: Convert to fraction form
    11,917.76/16,447.07 = 6,612.62/x
  3. Step 3: Cross multiply
    11,917.76x = 16,447.07 × 6,612.62
  4. Step 4: Simplify right side
    11,917.76x = 108,758,158.32
  5. Step 5: Solve for x
    x = 108,758,158.32/11,917.76
  6. Step 6: Final answer
    x = 9,125.73

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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.