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Finding the Fourth Proportional to 12,107.97, 16,709.22 and 6,802.79

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Solution

The fourth proportional to 12,107.97, 16,709.22 and 6,802.79 is: 9,387.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,107.97 : 16,709.22 = 6,802.79 : x
  2. Step 2: Convert to fraction form
    12,107.97/16,709.22 = 6,802.79/x
  3. Step 3: Cross multiply
    12,107.97x = 16,709.22 × 6,802.79
  4. Step 4: Simplify right side
    12,107.97x = 113,669,231.18
  5. Step 5: Solve for x
    x = 113,669,231.18/12,107.97
  6. Step 6: Final answer
    x = 9,387.97

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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.