Home / 12,613.97-18,922.79-3,847.75

Finding the Fourth Proportional to 12,613.97, 18,922.79 and 3,847.75

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Solution

The fourth proportional to 12,613.97, 18,922.79 and 3,847.75 is: 5,772.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,613.97 : 18,922.79 = 3,847.75 : x
  2. Step 2: Convert to fraction form
    12,613.97/18,922.79 = 3,847.75/x
  3. Step 3: Cross multiply
    12,613.97x = 18,922.79 × 3,847.75
  4. Step 4: Simplify right side
    12,613.97x = 72,810,127.53
  5. Step 5: Solve for x
    x = 72,810,127.53/12,613.97
  6. Step 6: Final answer
    x = 5,772.18

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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.