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Finding the Fourth Proportional to 14,076.72, 19,425.60 and 7,789.14

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Solution

The fourth proportional to 14,076.72, 19,425.60 and 7,789.14 is: 10,748.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,076.72 : 19,425.60 = 7,789.14 : x
  2. Step 2: Convert to fraction form
    14,076.72/19,425.60 = 7,789.14/x
  3. Step 3: Cross multiply
    14,076.72x = 19,425.60 × 7,789.14
  4. Step 4: Simplify right side
    14,076.72x = 151,308,717.98
  5. Step 5: Solve for x
    x = 151,308,717.98/14,076.72
  6. Step 6: Final answer
    x = 10,748.86

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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.