Home / 21,185.20-31,778.04-6,394.26

Finding the Fourth Proportional to 21,185.20, 31,778.04 and 6,394.26

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Solution

The fourth proportional to 21,185.20, 31,778.04 and 6,394.26 is: 9,591.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.20 : 31,778.04 = 6,394.26 : x
  2. Step 2: Convert to fraction form
    21,185.20/31,778.04 = 6,394.26/x
  3. Step 3: Cross multiply
    21,185.20x = 31,778.04 × 6,394.26
  4. Step 4: Simplify right side
    21,185.20x = 203,197,050.05
  5. Step 5: Solve for x
    x = 203,197,050.05/21,185.20
  6. Step 6: Final answer
    x = 9,591.46

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