Home / 21,244.75-31,870.92-8,757.83

Finding the Fourth Proportional to 21,244.75, 31,870.92 and 8,757.83

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Solution

The fourth proportional to 21,244.75, 31,870.92 and 8,757.83 is: 13,138.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,244.75 : 31,870.92 = 8,757.83 : x
  2. Step 2: Convert to fraction form
    21,244.75/31,870.92 = 8,757.83/x
  3. Step 3: Cross multiply
    21,244.75x = 31,870.92 × 8,757.83
  4. Step 4: Simplify right side
    21,244.75x = 279,120,099.30
  5. Step 5: Solve for x
    x = 279,120,099.30/21,244.75
  6. Step 6: Final answer
    x = 13,138.31

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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.