Home / 20,744.90-31,113.30-6,893.90

Finding the Fourth Proportional to 20,744.90, 31,113.30 and 6,893.90

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Solution

The fourth proportional to 20,744.90, 31,113.30 and 6,893.90 is: 10,339.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,744.90 : 31,113.30 = 6,893.90 : x
  2. Step 2: Convert to fraction form
    20,744.90/31,113.30 = 6,893.90/x
  3. Step 3: Cross multiply
    20,744.90x = 31,113.30 × 6,893.90
  4. Step 4: Simplify right side
    20,744.90x = 214,491,978.87
  5. Step 5: Solve for x
    x = 214,491,978.87/20,744.90
  6. Step 6: Final answer
    x = 10,339.50

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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.