Home / 20,954.36-31,452.20-15,392.09

Finding the Fourth Proportional to 20,954.36, 31,452.20 and 15,392.09

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Solution

The fourth proportional to 20,954.36, 31,452.20 and 15,392.09 is: 23,103.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954.36 : 31,452.20 = 15,392.09 : x
  2. Step 2: Convert to fraction form
    20,954.36/31,452.20 = 15,392.09/x
  3. Step 3: Cross multiply
    20,954.36x = 31,452.20 × 15,392.09
  4. Step 4: Simplify right side
    20,954.36x = 484,115,093.10
  5. Step 5: Solve for x
    x = 484,115,093.10/20,954.36
  6. Step 6: Final answer
    x = 23,103.31

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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.