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Finding the Fourth Proportional to 12,617.10, 18,919.07 and 4,713.12

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Solution

The fourth proportional to 12,617.10, 18,919.07 and 4,713.12 is: 7,067.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,617.10 : 18,919.07 = 4,713.12 : x
  2. Step 2: Convert to fraction form
    12,617.10/18,919.07 = 4,713.12/x
  3. Step 3: Cross multiply
    12,617.10x = 18,919.07 × 4,713.12
  4. Step 4: Simplify right side
    12,617.10x = 89,167,847.20
  5. Step 5: Solve for x
    x = 89,167,847.20/12,617.10
  6. Step 6: Final answer
    x = 7,067.22

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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.