Home / 12,612.31-18,902.97-5,591.43

Finding the Fourth Proportional to 12,612.31, 18,902.97 and 5,591.43

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Solution

The fourth proportional to 12,612.31, 18,902.97 and 5,591.43 is: 8,380.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.31 : 18,902.97 = 5,591.43 : x
  2. Step 2: Convert to fraction form
    12,612.31/18,902.97 = 5,591.43/x
  3. Step 3: Cross multiply
    12,612.31x = 18,902.97 × 5,591.43
  4. Step 4: Simplify right side
    12,612.31x = 105,694,633.55
  5. Step 5: Solve for x
    x = 105,694,633.55/12,612.31
  6. Step 6: Final answer
    x = 8,380.28

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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.