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Finding the Fourth Proportional to 31,873.58, 43,983.65 and 18,443.87

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Solution

The fourth proportional to 31,873.58, 43,983.65 and 18,443.87 is: 25,451.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,873.58 : 43,983.65 = 18,443.87 : x
  2. Step 2: Convert to fraction form
    31,873.58/43,983.65 = 18,443.87/x
  3. Step 3: Cross multiply
    31,873.58x = 43,983.65 × 18,443.87
  4. Step 4: Simplify right side
    31,873.58x = 811,228,548.92
  5. Step 5: Solve for x
    x = 811,228,548.92/31,873.58
  6. Step 6: Final answer
    x = 25,451.45

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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.