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Finding the Fourth Proportional to 11,791.71, 16,272.44 and 6,486.53

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Solution

The fourth proportional to 11,791.71, 16,272.44 and 6,486.53 is: 8,951.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,791.71 : 16,272.44 = 6,486.53 : x
  2. Step 2: Convert to fraction form
    11,791.71/16,272.44 = 6,486.53/x
  3. Step 3: Cross multiply
    11,791.71x = 16,272.44 × 6,486.53
  4. Step 4: Simplify right side
    11,791.71x = 105,551,727.13
  5. Step 5: Solve for x
    x = 105,551,727.13/11,791.71
  6. Step 6: Final answer
    x = 8,951.35

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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.