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Finding the Fourth Proportional to 11,678.72, 16,116.72 and 6,373.58

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Solution

The fourth proportional to 11,678.72, 16,116.72 and 6,373.58 is: 8,795.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,678.72 : 16,116.72 = 6,373.58 : x
  2. Step 2: Convert to fraction form
    11,678.72/16,116.72 = 6,373.58/x
  3. Step 3: Cross multiply
    11,678.72x = 16,116.72 × 6,373.58
  4. Step 4: Simplify right side
    11,678.72x = 102,721,204.26
  5. Step 5: Solve for x
    x = 102,721,204.26/11,678.72
  6. Step 6: Final answer
    x = 8,795.59

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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.