Home / 20,308.21-30,453.59-6,982.54

Finding the Fourth Proportional to 20,308.21, 30,453.59 and 6,982.54

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Solution

The fourth proportional to 20,308.21, 30,453.59 and 6,982.54 is: 10,470.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308.21 : 30,453.59 = 6,982.54 : x
  2. Step 2: Convert to fraction form
    20,308.21/30,453.59 = 6,982.54/x
  3. Step 3: Cross multiply
    20,308.21x = 30,453.59 × 6,982.54
  4. Step 4: Simplify right side
    20,308.21x = 212,643,351.64
  5. Step 5: Solve for x
    x = 212,643,351.64/20,308.21
  6. Step 6: Final answer
    x = 10,470.81

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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.