Home / 38,105.97-57,161.66-13,145.64

Finding the Fourth Proportional to 38,105.97, 57,161.66 and 13,145.64

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Solution

The fourth proportional to 38,105.97, 57,161.66 and 13,145.64 is: 19,719.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,105.97 : 57,161.66 = 13,145.64 : x
  2. Step 2: Convert to fraction form
    38,105.97/57,161.66 = 13,145.64/x
  3. Step 3: Cross multiply
    38,105.97x = 57,161.66 × 13,145.64
  4. Step 4: Simplify right side
    38,105.97x = 751,426,604.16
  5. Step 5: Solve for x
    x = 751,426,604.16/38,105.97
  6. Step 6: Final answer
    x = 19,719.39

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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.