Home / 20,563.32-30,769.21-18,204.60

Finding the Fourth Proportional to 20,563.32, 30,769.21 and 18,204.60

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Solution

The fourth proportional to 20,563.32, 30,769.21 and 18,204.60 is: 27,239.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.32 : 30,769.21 = 18,204.60 : x
  2. Step 2: Convert to fraction form
    20,563.32/30,769.21 = 18,204.60/x
  3. Step 3: Cross multiply
    20,563.32x = 30,769.21 × 18,204.60
  4. Step 4: Simplify right side
    20,563.32x = 560,141,160.37
  5. Step 5: Solve for x
    x = 560,141,160.37/20,563.32
  6. Step 6: Final answer
    x = 27,239.82

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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.