Home / 11,199.28-15,435.48-8,208.76

Finding the Fourth Proportional to 11,199.28, 15,435.48 and 8,208.76

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Solution

The fourth proportional to 11,199.28, 15,435.48 and 8,208.76 is: 11,313.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,199.28 : 15,435.48 = 8,208.76 : x
  2. Step 2: Convert to fraction form
    11,199.28/15,435.48 = 8,208.76/x
  3. Step 3: Cross multiply
    11,199.28x = 15,435.48 × 8,208.76
  4. Step 4: Simplify right side
    11,199.28x = 126,706,150.80
  5. Step 5: Solve for x
    x = 126,706,150.80/11,199.28
  6. Step 6: Final answer
    x = 11,313.78

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Half scale
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Double scale
Find fourth proportional to 11,200.28, 15,436.86 and 8,209.76
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.