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Finding the Fourth Proportional to 11,808.72, 16,296.84 and 6,840.72

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Solution

The fourth proportional to 11,808.72, 16,296.84 and 6,840.72 is: 9,440.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,808.72 : 16,296.84 = 6,840.72 : x
  2. Step 2: Convert to fraction form
    11,808.72/16,296.84 = 6,840.72/x
  3. Step 3: Cross multiply
    11,808.72x = 16,296.84 × 6,840.72
  4. Step 4: Simplify right side
    11,808.72x = 111,482,119.32
  5. Step 5: Solve for x
    x = 111,482,119.32/11,808.72
  6. Step 6: Final answer
    x = 9,440.66

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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.