Home / 18,561.57-27,781.20-15,995.49

Finding the Fourth Proportional to 18,561.57, 27,781.20 and 15,995.49

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Solution

The fourth proportional to 18,561.57, 27,781.20 and 15,995.49 is: 23,940.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,561.57 : 27,781.20 = 15,995.49 : x
  2. Step 2: Convert to fraction form
    18,561.57/27,781.20 = 15,995.49/x
  3. Step 3: Cross multiply
    18,561.57x = 27,781.20 × 15,995.49
  4. Step 4: Simplify right side
    18,561.57x = 444,373,906.79
  5. Step 5: Solve for x
    x = 444,373,906.79/18,561.57
  6. Step 6: Final answer
    x = 23,940.53

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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.