Home / 20,410.97-28,167.12-11,458.49

Finding the Fourth Proportional to 20,410.97, 28,167.12 and 11,458.49

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Solution

The fourth proportional to 20,410.97, 28,167.12 and 11,458.49 is: 15,812.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.97 : 28,167.12 = 11,458.49 : x
  2. Step 2: Convert to fraction form
    20,410.97/28,167.12 = 11,458.49/x
  3. Step 3: Cross multiply
    20,410.97x = 28,167.12 × 11,458.49
  4. Step 4: Simplify right side
    20,410.97x = 322,752,662.85
  5. Step 5: Solve for x
    x = 322,752,662.85/20,410.97
  6. Step 6: Final answer
    x = 15,812.71

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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.