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Finding the Fourth Proportional to 20,112.24, 27,745.56 and 12,553.68

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Solution

The fourth proportional to 20,112.24, 27,745.56 and 12,553.68 is: 17,318.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.24 : 27,745.56 = 12,553.68 : x
  2. Step 2: Convert to fraction form
    20,112.24/27,745.56 = 12,553.68/x
  3. Step 3: Cross multiply
    20,112.24x = 27,745.56 × 12,553.68
  4. Step 4: Simplify right side
    20,112.24x = 348,308,881.66
  5. Step 5: Solve for x
    x = 348,308,881.66/20,112.24
  6. Step 6: Final answer
    x = 17,318.25

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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.