Home / 20,664.90-30,997.49-6,627.06

Finding the Fourth Proportional to 20,664.90, 30,997.49 and 6,627.06

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Solution

The fourth proportional to 20,664.90, 30,997.49 and 6,627.06 is: 9,940.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.90 : 30,997.49 = 6,627.06 : x
  2. Step 2: Convert to fraction form
    20,664.90/30,997.49 = 6,627.06/x
  3. Step 3: Cross multiply
    20,664.90x = 30,997.49 × 6,627.06
  4. Step 4: Simplify right side
    20,664.90x = 205,422,192.94
  5. Step 5: Solve for x
    x = 205,422,192.94/20,664.90
  6. Step 6: Final answer
    x = 9,940.63

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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.