Home / 11,921.64-16,452.60-6,886.80

Finding the Fourth Proportional to 11,921.64, 16,452.60 and 6,886.80

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Solution

The fourth proportional to 11,921.64, 16,452.60 and 6,886.80 is: 9,504.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.64 : 16,452.60 = 6,886.80 : x
  2. Step 2: Convert to fraction form
    11,921.64/16,452.60 = 6,886.80/x
  3. Step 3: Cross multiply
    11,921.64x = 16,452.60 × 6,886.80
  4. Step 4: Simplify right side
    11,921.64x = 113,305,765.68
  5. Step 5: Solve for x
    x = 113,305,765.68/11,921.64
  6. Step 6: Final answer
    x = 9,504.21

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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.