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Finding the Fourth Proportional to 12,834.66, 17,712.27 and 7,169.49

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Solution

The fourth proportional to 12,834.66, 17,712.27 and 7,169.49 is: 9,894.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,834.66 : 17,712.27 = 7,169.49 : x
  2. Step 2: Convert to fraction form
    12,834.66/17,712.27 = 7,169.49/x
  3. Step 3: Cross multiply
    12,834.66x = 17,712.27 × 7,169.49
  4. Step 4: Simplify right side
    12,834.66x = 126,987,942.64
  5. Step 5: Solve for x
    x = 126,987,942.64/12,834.66
  6. Step 6: Final answer
    x = 9,894.14

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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.