Home / 18,517.96-25,556.34-10,135

Finding the Fourth Proportional to 18,517.96, 25,556.34 and 10,135

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Solution

The fourth proportional to 18,517.96, 25,556.34 and 10,135 is: 13,987.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,517.96 : 25,556.34 = 10,135 : x
  2. Step 2: Convert to fraction form
    18,517.96/25,556.34 = 10,135/x
  3. Step 3: Cross multiply
    18,517.96x = 25,556.34 × 10,135
  4. Step 4: Simplify right side
    18,517.96x = 259,013,505.90
  5. Step 5: Solve for x
    x = 259,013,505.90/18,517.96
  6. Step 6: Final answer
    x = 13,987.15

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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.