Home / 12,131.71-18,186.09-5,553.97

Finding the Fourth Proportional to 12,131.71, 18,186.09 and 5,553.97

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Solution

The fourth proportional to 12,131.71, 18,186.09 and 5,553.97 is: 8,325.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131.71 : 18,186.09 = 5,553.97 : x
  2. Step 2: Convert to fraction form
    12,131.71/18,186.09 = 5,553.97/x
  3. Step 3: Cross multiply
    12,131.71x = 18,186.09 × 5,553.97
  4. Step 4: Simplify right side
    12,131.71x = 101,004,998.28
  5. Step 5: Solve for x
    x = 101,004,998.28/12,131.71
  6. Step 6: Final answer
    x = 8,325.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.