Home / 20,961.46-31,414.41-15,388.75

Finding the Fourth Proportional to 20,961.46, 31,414.41 and 15,388.75

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Solution

The fourth proportional to 20,961.46, 31,414.41 and 15,388.75 is: 23,062.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.46 : 31,414.41 = 15,388.75 : x
  2. Step 2: Convert to fraction form
    20,961.46/31,414.41 = 15,388.75/x
  3. Step 3: Cross multiply
    20,961.46x = 31,414.41 × 15,388.75
  4. Step 4: Simplify right side
    20,961.46x = 483,428,501.89
  5. Step 5: Solve for x
    x = 483,428,501.89/20,961.46
  6. Step 6: Final answer
    x = 23,062.73

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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.