Home / 15,167.56-20,906.96-10,121.80

Finding the Fourth Proportional to 15,167.56, 20,906.96 and 10,121.80

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Solution

The fourth proportional to 15,167.56, 20,906.96 and 10,121.80 is: 13,951.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,167.56 : 20,906.96 = 10,121.80 : x
  2. Step 2: Convert to fraction form
    15,167.56/20,906.96 = 10,121.80/x
  3. Step 3: Cross multiply
    15,167.56x = 20,906.96 × 10,121.80
  4. Step 4: Simplify right side
    15,167.56x = 211,616,067.73
  5. Step 5: Solve for x
    x = 211,616,067.73/15,167.56
  6. Step 6: Final answer
    x = 13,951.89

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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.