Home / 31,623.80-43,639.68-18,197.12

Finding the Fourth Proportional to 31,623.80, 43,639.68 and 18,197.12

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Solution

The fourth proportional to 31,623.80, 43,639.68 and 18,197.12 is: 25,111.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,623.80 : 43,639.68 = 18,197.12 : x
  2. Step 2: Convert to fraction form
    31,623.80/43,639.68 = 18,197.12/x
  3. Step 3: Cross multiply
    31,623.80x = 43,639.68 × 18,197.12
  4. Step 4: Simplify right side
    31,623.80x = 794,116,493.72
  5. Step 5: Solve for x
    x = 794,116,493.72/31,623.80
  6. Step 6: Final answer
    x = 25,111.36

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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.