Home / 18,139.88-27,190.62-10,331.96

Finding the Fourth Proportional to 18,139.88, 27,190.62 and 10,331.96

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Solution

The fourth proportional to 18,139.88, 27,190.62 and 10,331.96 is: 15,487.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.88 : 27,190.62 = 10,331.96 : x
  2. Step 2: Convert to fraction form
    18,139.88/27,190.62 = 10,331.96/x
  3. Step 3: Cross multiply
    18,139.88x = 27,190.62 × 10,331.96
  4. Step 4: Simplify right side
    18,139.88x = 280,932,398.22
  5. Step 5: Solve for x
    x = 280,932,398.22/18,139.88
  6. Step 6: Final answer
    x = 15,487.00

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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.