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Finding the Fourth Proportional to 11,867.30, 16,375.72 and 6,561.39

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Solution

The fourth proportional to 11,867.30, 16,375.72 and 6,561.39 is: 9,054.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,867.30 : 16,375.72 = 6,561.39 : x
  2. Step 2: Convert to fraction form
    11,867.30/16,375.72 = 6,561.39/x
  3. Step 3: Cross multiply
    11,867.30x = 16,375.72 × 6,561.39
  4. Step 4: Simplify right side
    11,867.30x = 107,447,485.45
  5. Step 5: Solve for x
    x = 107,447,485.45/11,867.30
  6. Step 6: Final answer
    x = 9,054.08

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.