Home / 11,921.80-16,452.28-6,616.64

Finding the Fourth Proportional to 11,921.80, 16,452.28 and 6,616.64

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Solution

The fourth proportional to 11,921.80, 16,452.28 and 6,616.64 is: 9,131.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.80 : 16,452.28 = 6,616.64 : x
  2. Step 2: Convert to fraction form
    11,921.80/16,452.28 = 6,616.64/x
  3. Step 3: Cross multiply
    11,921.80x = 16,452.28 × 6,616.64
  4. Step 4: Simplify right side
    11,921.80x = 108,858,813.94
  5. Step 5: Solve for x
    x = 108,858,813.94/11,921.80
  6. Step 6: Final answer
    x = 9,131.07

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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.