Home / 12,611.45-18,919.95-3,847.04

Finding the Fourth Proportional to 12,611.45, 18,919.95 and 3,847.04

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Solution

The fourth proportional to 12,611.45, 18,919.95 and 3,847.04 is: 5,771.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,611.45 : 18,919.95 = 3,847.04 : x
  2. Step 2: Convert to fraction form
    12,611.45/18,919.95 = 3,847.04/x
  3. Step 3: Cross multiply
    12,611.45x = 18,919.95 × 3,847.04
  4. Step 4: Simplify right side
    12,611.45x = 72,785,709.85
  5. Step 5: Solve for x
    x = 72,785,709.85/12,611.45
  6. Step 6: Final answer
    x = 5,771.40

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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.