Home / 11,917.19-16,445.88-6,612.09

Finding the Fourth Proportional to 11,917.19, 16,445.88 and 6,612.09

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Solution

The fourth proportional to 11,917.19, 16,445.88 and 6,612.09 is: 9,124.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,917.19 : 16,445.88 = 6,612.09 : x
  2. Step 2: Convert to fraction form
    11,917.19/16,445.88 = 6,612.09/x
  3. Step 3: Cross multiply
    11,917.19x = 16,445.88 × 6,612.09
  4. Step 4: Simplify right side
    11,917.19x = 108,741,638.69
  5. Step 5: Solve for x
    x = 108,741,638.69/11,917.19
  6. Step 6: Final answer
    x = 9,124.78

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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.