Home / 11,728.25-16,180.97-6,688.85

Finding the Fourth Proportional to 11,728.25, 16,180.97 and 6,688.85

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Solution

The fourth proportional to 11,728.25, 16,180.97 and 6,688.85 is: 9,228.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,728.25 : 16,180.97 = 6,688.85 : x
  2. Step 2: Convert to fraction form
    11,728.25/16,180.97 = 6,688.85/x
  3. Step 3: Cross multiply
    11,728.25x = 16,180.97 × 6,688.85
  4. Step 4: Simplify right side
    11,728.25x = 108,231,966.84
  5. Step 5: Solve for x
    x = 108,231,966.84/11,728.25
  6. Step 6: Final answer
    x = 9,228.32

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Half scale
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Double scale
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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.