Home / 12,611.96-18,920.72-3,847.56

Finding the Fourth Proportional to 12,611.96, 18,920.72 and 3,847.56

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Solution

The fourth proportional to 12,611.96, 18,920.72 and 3,847.56 is: 5,772.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,611.96 : 18,920.72 = 3,847.56 : x
  2. Step 2: Convert to fraction form
    12,611.96/18,920.72 = 3,847.56/x
  3. Step 3: Cross multiply
    12,611.96x = 18,920.72 × 3,847.56
  4. Step 4: Simplify right side
    12,611.96x = 72,798,605.44
  5. Step 5: Solve for x
    x = 72,798,605.44/12,611.96
  6. Step 6: Final answer
    x = 5,772.19

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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.