Home / 20,675.78-30,998.38-6,627.64

Finding the Fourth Proportional to 20,675.78, 30,998.38 and 6,627.64

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Solution

The fourth proportional to 20,675.78, 30,998.38 and 6,627.64 is: 9,936.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.78 : 30,998.38 = 6,627.64 : x
  2. Step 2: Convert to fraction form
    20,675.78/30,998.38 = 6,627.64/x
  3. Step 3: Cross multiply
    20,675.78x = 30,998.38 × 6,627.64
  4. Step 4: Simplify right side
    20,675.78x = 205,446,103.22
  5. Step 5: Solve for x
    x = 205,446,103.22/20,675.78
  6. Step 6: Final answer
    x = 9,936.56

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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.