Home / 18,121.10-27,190.94-8,769.15

Finding the Fourth Proportional to 18,121.10, 27,190.94 and 8,769.15

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Solution

The fourth proportional to 18,121.10, 27,190.94 and 8,769.15 is: 13,158.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.10 : 27,190.94 = 8,769.15 : x
  2. Step 2: Convert to fraction form
    18,121.10/27,190.94 = 8,769.15/x
  3. Step 3: Cross multiply
    18,121.10x = 27,190.94 × 8,769.15
  4. Step 4: Simplify right side
    18,121.10x = 238,441,387.66
  5. Step 5: Solve for x
    x = 238,441,387.66/18,121.10
  6. Step 6: Final answer
    x = 13,158.22

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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.