Home / 13,187.94-19,781.22-3,327.31

Finding the Fourth Proportional to 13,187.94, 19,781.22 and 3,327.31

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Solution

The fourth proportional to 13,187.94, 19,781.22 and 3,327.31 is: 4,990.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.94 : 19,781.22 = 3,327.31 : x
  2. Step 2: Convert to fraction form
    13,187.94/19,781.22 = 3,327.31/x
  3. Step 3: Cross multiply
    13,187.94x = 19,781.22 × 3,327.31
  4. Step 4: Simplify right side
    13,187.94x = 65,818,251.12
  5. Step 5: Solve for x
    x = 65,818,251.12/13,187.94
  6. Step 6: Final answer
    x = 4,990.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.