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Finding the Fourth Proportional to 31,392.37, 43,321.46 and 17,245.20

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Solution

The fourth proportional to 31,392.37, 43,321.46 and 17,245.20 is: 23,798.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,392.37 : 43,321.46 = 17,245.20 : x
  2. Step 2: Convert to fraction form
    31,392.37/43,321.46 = 17,245.20/x
  3. Step 3: Cross multiply
    31,392.37x = 43,321.46 × 17,245.20
  4. Step 4: Simplify right side
    31,392.37x = 747,087,241.99
  5. Step 5: Solve for x
    x = 747,087,241.99/31,392.37
  6. Step 6: Final answer
    x = 23,798.37

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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.