Home / 12,508.78-18,760.20-3,741.34

Finding the Fourth Proportional to 12,508.78, 18,760.20 and 3,741.34

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Solution

The fourth proportional to 12,508.78, 18,760.20 and 3,741.34 is: 5,611.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,508.78 : 18,760.20 = 3,741.34 : x
  2. Step 2: Convert to fraction form
    12,508.78/18,760.20 = 3,741.34/x
  3. Step 3: Cross multiply
    12,508.78x = 18,760.20 × 3,741.34
  4. Step 4: Simplify right side
    12,508.78x = 70,188,286.67
  5. Step 5: Solve for x
    x = 70,188,286.67/12,508.78
  6. Step 6: Final answer
    x = 5,611.12

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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.