Home / 20,744.20-31,116.30-20,614.60

Finding the Fourth Proportional to 20,744.20, 31,116.30 and 20,614.60

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Solution

The fourth proportional to 20,744.20, 31,116.30 and 20,614.60 is: 30,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,744.20 : 31,116.30 = 20,614.60 : x
  2. Step 2: Convert to fraction form
    20,744.20/31,116.30 = 20,614.60/x
  3. Step 3: Cross multiply
    20,744.20x = 31,116.30 × 20,614.60
  4. Step 4: Simplify right side
    20,744.20x = 641,450,077.98
  5. Step 5: Solve for x
    x = 641,450,077.98/20,744.20
  6. Step 6: Final answer
    x = 30,921.90

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1.5x scale

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.