Home / 20,091.02-27,728.17-13,198.07

Finding the Fourth Proportional to 20,091.02, 27,728.17 and 13,198.07

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Solution

The fourth proportional to 20,091.02, 27,728.17 and 13,198.07 is: 18,215.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.02 : 27,728.17 = 13,198.07 : x
  2. Step 2: Convert to fraction form
    20,091.02/27,728.17 = 13,198.07/x
  3. Step 3: Cross multiply
    20,091.02x = 27,728.17 × 13,198.07
  4. Step 4: Simplify right side
    20,091.02x = 365,958,364.96
  5. Step 5: Solve for x
    x = 365,958,364.96/20,091.02
  6. Step 6: Final answer
    x = 18,215.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.