Home / 20,617.56-30,882.51-13,958.15

Finding the Fourth Proportional to 20,617.56, 30,882.51 and 13,958.15

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Solution

The fourth proportional to 20,617.56, 30,882.51 and 13,958.15 is: 20,907.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.56 : 30,882.51 = 13,958.15 : x
  2. Step 2: Convert to fraction form
    20,617.56/30,882.51 = 13,958.15/x
  3. Step 3: Cross multiply
    20,617.56x = 30,882.51 × 13,958.15
  4. Step 4: Simplify right side
    20,617.56x = 431,062,552.54
  5. Step 5: Solve for x
    x = 431,062,552.54/20,617.56
  6. Step 6: Final answer
    x = 20,907.54

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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.