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Finding the Fourth Proportional to 31,253.85, 43,133.31 and 21,203.37

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Solution

The fourth proportional to 31,253.85, 43,133.31 and 21,203.37 is: 29,262.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,253.85 : 43,133.31 = 21,203.37 : x
  2. Step 2: Convert to fraction form
    31,253.85/43,133.31 = 21,203.37/x
  3. Step 3: Cross multiply
    31,253.85x = 43,133.31 × 21,203.37
  4. Step 4: Simplify right side
    31,253.85x = 914,571,531.25
  5. Step 5: Solve for x
    x = 914,571,531.25/31,253.85
  6. Step 6: Final answer
    x = 29,262.68

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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.