Home / 11,993.36-16,550.70-6,688.76

Finding the Fourth Proportional to 11,993.36, 16,550.70 and 6,688.76

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Solution

The fourth proportional to 11,993.36, 16,550.70 and 6,688.76 is: 9,230.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,993.36 : 16,550.70 = 6,688.76 : x
  2. Step 2: Convert to fraction form
    11,993.36/16,550.70 = 6,688.76/x
  3. Step 3: Cross multiply
    11,993.36x = 16,550.70 × 6,688.76
  4. Step 4: Simplify right side
    11,993.36x = 110,703,660.13
  5. Step 5: Solve for x
    x = 110,703,660.13/11,993.36
  6. Step 6: Final answer
    x = 9,230.41

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Half scale
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Double scale
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Similar ratio
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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.