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Finding the Fourth Proportional to 8,716.16, 13,121.66 and 7,941.14

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Solution

The fourth proportional to 8,716.16, 13,121.66 and 7,941.14 is: 11,954.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,716.16 : 13,121.66 = 7,941.14 : x
  2. Step 2: Convert to fraction form
    8,716.16/13,121.66 = 7,941.14/x
  3. Step 3: Cross multiply
    8,716.16x = 13,121.66 × 7,941.14
  4. Step 4: Simplify right side
    8,716.16x = 104,200,952.47
  5. Step 5: Solve for x
    x = 104,200,952.47/8,716.16
  6. Step 6: Final answer
    x = 11,954.92

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.