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Finding the Fourth Proportional to 12,391.52, 17,099.97 and 6,802.52

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Solution

The fourth proportional to 12,391.52, 17,099.97 and 6,802.52 is: 9,387.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.52 : 17,099.97 = 6,802.52 : x
  2. Step 2: Convert to fraction form
    12,391.52/17,099.97 = 6,802.52/x
  3. Step 3: Cross multiply
    12,391.52x = 17,099.97 × 6,802.52
  4. Step 4: Simplify right side
    12,391.52x = 116,322,887.92
  5. Step 5: Solve for x
    x = 116,322,887.92/12,391.52
  6. Step 6: Final answer
    x = 9,387.30

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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.