Home / 30,546.46-45,791.49-21,190.90

Finding the Fourth Proportional to 30,546.46, 45,791.49 and 21,190.90

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Solution

The fourth proportional to 30,546.46, 45,791.49 and 21,190.90 is: 31,766.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,546.46 : 45,791.49 = 21,190.90 : x
  2. Step 2: Convert to fraction form
    30,546.46/45,791.49 = 21,190.90/x
  3. Step 3: Cross multiply
    30,546.46x = 45,791.49 × 21,190.90
  4. Step 4: Simplify right side
    30,546.46x = 970,362,885.44
  5. Step 5: Solve for x
    x = 970,362,885.44/30,546.46
  6. Step 6: Final answer
    x = 31,766.79

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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.