Home / 11,921.26-16,451.90-6,616.12

Finding the Fourth Proportional to 11,921.26, 16,451.90 and 6,616.12

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Solution

The fourth proportional to 11,921.26, 16,451.90 and 6,616.12 is: 9,130.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.26 : 16,451.90 = 6,616.12 : x
  2. Step 2: Convert to fraction form
    11,921.26/16,451.90 = 6,616.12/x
  3. Step 3: Cross multiply
    11,921.26x = 16,451.90 × 6,616.12
  4. Step 4: Simplify right side
    11,921.26x = 108,847,744.63
  5. Step 5: Solve for x
    x = 108,847,744.63/11,921.26
  6. Step 6: Final answer
    x = 9,130.56

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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.