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Finding the Fourth Proportional to 31,591.71, 43,576.65 and 20,249.51

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Solution

The fourth proportional to 31,591.71, 43,576.65 and 20,249.51 is: 27,931.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,591.71 : 43,576.65 = 20,249.51 : x
  2. Step 2: Convert to fraction form
    31,591.71/43,576.65 = 20,249.51/x
  3. Step 3: Cross multiply
    31,591.71x = 43,576.65 × 20,249.51
  4. Step 4: Simplify right side
    31,591.71x = 882,405,592.06
  5. Step 5: Solve for x
    x = 882,405,592.06/31,591.71
  6. Step 6: Final answer
    x = 27,931.56

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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.