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Finding the Fourth Proportional to 12,863.56, 19,296.90 and 3,629.56

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Solution

The fourth proportional to 12,863.56, 19,296.90 and 3,629.56 is: 5,444.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,863.56 : 19,296.90 = 3,629.56 : x
  2. Step 2: Convert to fraction form
    12,863.56/19,296.90 = 3,629.56/x
  3. Step 3: Cross multiply
    12,863.56x = 19,296.90 × 3,629.56
  4. Step 4: Simplify right side
    12,863.56x = 70,039,256.36
  5. Step 5: Solve for x
    x = 70,039,256.36/12,863.56
  6. Step 6: Final answer
    x = 5,444.78

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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.