Home / 12,638.22-18,961.27-3,753.60

Finding the Fourth Proportional to 12,638.22, 18,961.27 and 3,753.60

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Solution

The fourth proportional to 12,638.22, 18,961.27 and 3,753.60 is: 5,631.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638.22 : 18,961.27 = 3,753.60 : x
  2. Step 2: Convert to fraction form
    12,638.22/18,961.27 = 3,753.60/x
  3. Step 3: Cross multiply
    12,638.22x = 18,961.27 × 3,753.60
  4. Step 4: Simplify right side
    12,638.22x = 71,172,942.58
  5. Step 5: Solve for x
    x = 71,172,942.58/12,638.22
  6. Step 6: Final answer
    x = 5,631.57

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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.