Home / 18,542.10-27,820.22-11,151.78

Finding the Fourth Proportional to 18,542.10, 27,820.22 and 11,151.78

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Solution

The fourth proportional to 18,542.10, 27,820.22 and 11,151.78 is: 16,731.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,542.10 : 27,820.22 = 11,151.78 : x
  2. Step 2: Convert to fraction form
    18,542.10/27,820.22 = 11,151.78/x
  3. Step 3: Cross multiply
    18,542.10x = 27,820.22 × 11,151.78
  4. Step 4: Simplify right side
    18,542.10x = 310,244,972.99
  5. Step 5: Solve for x
    x = 310,244,972.99/18,542.10
  6. Step 6: Final answer
    x = 16,731.92

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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.