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Finding the Fourth Proportional to 12,215.43, 16,857.27 and 6,626.43

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Solution

The fourth proportional to 12,215.43, 16,857.27 and 6,626.43 is: 9,144.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.43 : 16,857.27 = 6,626.43 : x
  2. Step 2: Convert to fraction form
    12,215.43/16,857.27 = 6,626.43/x
  3. Step 3: Cross multiply
    12,215.43x = 16,857.27 × 6,626.43
  4. Step 4: Simplify right side
    12,215.43x = 111,703,519.65
  5. Step 5: Solve for x
    x = 111,703,519.65/12,215.43
  6. Step 6: Final answer
    x = 9,144.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.