Home / 27,187.80-40,793.85-12,389.10

Finding the Fourth Proportional to 27,187.80, 40,793.85 and 12,389.10

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Solution

The fourth proportional to 27,187.80, 40,793.85 and 12,389.10 is: 18,589.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,187.80 : 40,793.85 = 12,389.10 : x
  2. Step 2: Convert to fraction form
    27,187.80/40,793.85 = 12,389.10/x
  3. Step 3: Cross multiply
    27,187.80x = 40,793.85 × 12,389.10
  4. Step 4: Simplify right side
    27,187.80x = 505,399,087.04
  5. Step 5: Solve for x
    x = 505,399,087.04/27,187.80
  6. Step 6: Final answer
    x = 18,589.19

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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.