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Finding the Fourth Proportional to 18,119.88, 24,993.90 and 13,091.48

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Solution

The fourth proportional to 18,119.88, 24,993.90 and 13,091.48 is: 18,057.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,119.88 : 24,993.90 = 13,091.48 : x
  2. Step 2: Convert to fraction form
    18,119.88/24,993.90 = 13,091.48/x
  3. Step 3: Cross multiply
    18,119.88x = 24,993.90 × 13,091.48
  4. Step 4: Simplify right side
    18,119.88x = 327,207,141.97
  5. Step 5: Solve for x
    x = 327,207,141.97/18,119.88
  6. Step 6: Final answer
    x = 18,057.91

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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.