Home / 11,921.66-16,451.78-6,616.52

Finding the Fourth Proportional to 11,921.66, 16,451.78 and 6,616.52

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Solution

The fourth proportional to 11,921.66, 16,451.78 and 6,616.52 is: 9,130.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.66 : 16,451.78 = 6,616.52 : x
  2. Step 2: Convert to fraction form
    11,921.66/16,451.78 = 6,616.52/x
  3. Step 3: Cross multiply
    11,921.66x = 16,451.78 × 6,616.52
  4. Step 4: Simplify right side
    11,921.66x = 108,853,416.06
  5. Step 5: Solve for x
    x = 108,853,416.06/11,921.66
  6. Step 6: Final answer
    x = 9,130.73

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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.