Home / 18,217.60-25,131.39-15,695.33

Finding the Fourth Proportional to 18,217.60, 25,131.39 and 15,695.33

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Solution

The fourth proportional to 18,217.60, 25,131.39 and 15,695.33 is: 21,651.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,217.60 : 25,131.39 = 15,695.33 : x
  2. Step 2: Convert to fraction form
    18,217.60/25,131.39 = 15,695.33/x
  3. Step 3: Cross multiply
    18,217.60x = 25,131.39 × 15,695.33
  4. Step 4: Simplify right side
    18,217.60x = 394,445,493.30
  5. Step 5: Solve for x
    x = 394,445,493.30/18,217.60
  6. Step 6: Final answer
    x = 21,651.89

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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.