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Finding the Fourth Proportional to 12,611.46, 18,900.18 and 6,375.87

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Solution

The fourth proportional to 12,611.46, 18,900.18 and 6,375.87 is: 9,555.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,611.46 : 18,900.18 = 6,375.87 : x
  2. Step 2: Convert to fraction form
    12,611.46/18,900.18 = 6,375.87/x
  3. Step 3: Cross multiply
    12,611.46x = 18,900.18 × 6,375.87
  4. Step 4: Simplify right side
    12,611.46x = 120,505,090.66
  5. Step 5: Solve for x
    x = 120,505,090.66/12,611.46
  6. Step 6: Final answer
    x = 9,555.21

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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.