Home / 20,744.40-31,116.60-6,893.40

Finding the Fourth Proportional to 20,744.40, 31,116.60 and 6,893.40

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Solution

The fourth proportional to 20,744.40, 31,116.60 and 6,893.40 is: 10,340.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,744.40 : 31,116.60 = 6,893.40 : x
  2. Step 2: Convert to fraction form
    20,744.40/31,116.60 = 6,893.40/x
  3. Step 3: Cross multiply
    20,744.40x = 31,116.60 × 6,893.40
  4. Step 4: Simplify right side
    20,744.40x = 214,499,170.44
  5. Step 5: Solve for x
    x = 214,499,170.44/20,744.40
  6. Step 6: Final answer
    x = 10,340.10

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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.