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Finding the Fourth Proportional to 12,493.57, 18,749.64 and 5,919.78

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Solution

The fourth proportional to 12,493.57, 18,749.64 and 5,919.78 is: 8,884.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,493.57 : 18,749.64 = 5,919.78 : x
  2. Step 2: Convert to fraction form
    12,493.57/18,749.64 = 5,919.78/x
  3. Step 3: Cross multiply
    12,493.57x = 18,749.64 × 5,919.78
  4. Step 4: Simplify right side
    12,493.57x = 110,993,680.97
  5. Step 5: Solve for x
    x = 110,993,680.97/12,493.57
  6. Step 6: Final answer
    x = 8,884.06

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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.