Home / 18,680.45-25,754.23-15,481.75

Finding the Fourth Proportional to 18,680.45, 25,754.23 and 15,481.75

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Solution

The fourth proportional to 18,680.45, 25,754.23 and 15,481.75 is: 21,344.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,680.45 : 25,754.23 = 15,481.75 : x
  2. Step 2: Convert to fraction form
    18,680.45/25,754.23 = 15,481.75/x
  3. Step 3: Cross multiply
    18,680.45x = 25,754.23 × 15,481.75
  4. Step 4: Simplify right side
    18,680.45x = 398,720,472.89
  5. Step 5: Solve for x
    x = 398,720,472.89/18,680.45
  6. Step 6: Final answer
    x = 21,344.26

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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.