Home / 21,906.75-30,231.36-12,475.32

Finding the Fourth Proportional to 21,906.75, 30,231.36 and 12,475.32

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Solution

The fourth proportional to 21,906.75, 30,231.36 and 12,475.32 is: 17,215.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,906.75 : 30,231.36 = 12,475.32 : x
  2. Step 2: Convert to fraction form
    21,906.75/30,231.36 = 12,475.32/x
  3. Step 3: Cross multiply
    21,906.75x = 30,231.36 × 12,475.32
  4. Step 4: Simplify right side
    21,906.75x = 377,145,890.04
  5. Step 5: Solve for x
    x = 377,145,890.04/21,906.75
  6. Step 6: Final answer
    x = 17,215.97

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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.