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Finding the Fourth Proportional to 14,005.60, 19,327.69 and 7,717.97

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Solution

The fourth proportional to 14,005.60, 19,327.69 and 7,717.97 is: 10,650.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,005.60 : 19,327.69 = 7,717.97 : x
  2. Step 2: Convert to fraction form
    14,005.60/19,327.69 = 7,717.97/x
  3. Step 3: Cross multiply
    14,005.60x = 19,327.69 × 7,717.97
  4. Step 4: Simplify right side
    14,005.60x = 149,170,531.59
  5. Step 5: Solve for x
    x = 149,170,531.59/14,005.60
  6. Step 6: Final answer
    x = 10,650.78

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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.