Home / 20,310.55-30,470.38-7,163.03

Finding the Fourth Proportional to 20,310.55, 30,470.38 and 7,163.03

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Solution

The fourth proportional to 20,310.55, 30,470.38 and 7,163.03 is: 10,746.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,310.55 : 30,470.38 = 7,163.03 : x
  2. Step 2: Convert to fraction form
    20,310.55/30,470.38 = 7,163.03/x
  3. Step 3: Cross multiply
    20,310.55x = 30,470.38 × 7,163.03
  4. Step 4: Simplify right side
    20,310.55x = 218,260,304.32
  5. Step 5: Solve for x
    x = 218,260,304.32/20,310.55
  6. Step 6: Final answer
    x = 10,746.16

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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.