Home / 11,383.05-15,727.89-8,190.03

Finding the Fourth Proportional to 11,383.05, 15,727.89 and 8,190.03

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Solution

The fourth proportional to 11,383.05, 15,727.89 and 8,190.03 is: 11,316.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,383.05 : 15,727.89 = 8,190.03 : x
  2. Step 2: Convert to fraction form
    11,383.05/15,727.89 = 8,190.03/x
  3. Step 3: Cross multiply
    11,383.05x = 15,727.89 × 8,190.03
  4. Step 4: Simplify right side
    11,383.05x = 128,811,896.54
  5. Step 5: Solve for x
    x = 128,811,896.54/11,383.05
  6. Step 6: Final answer
    x = 11,316.11

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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.