Home / 18,821.96-25,975.38-11,372.36

Finding the Fourth Proportional to 18,821.96, 25,975.38 and 11,372.36

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Solution

The fourth proportional to 18,821.96, 25,975.38 and 11,372.36 is: 15,694.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.96 : 25,975.38 = 11,372.36 : x
  2. Step 2: Convert to fraction form
    18,821.96/25,975.38 = 11,372.36/x
  3. Step 3: Cross multiply
    18,821.96x = 25,975.38 × 11,372.36
  4. Step 4: Simplify right side
    18,821.96x = 295,401,372.50
  5. Step 5: Solve for x
    x = 295,401,372.50/18,821.96
  6. Step 6: Final answer
    x = 15,694.51

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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.