Home / 20,722.44-31,076.34-6,681.90

Finding the Fourth Proportional to 20,722.44, 31,076.34 and 6,681.90

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Solution

The fourth proportional to 20,722.44, 31,076.34 and 6,681.90 is: 10,020.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.44 : 31,076.34 = 6,681.90 : x
  2. Step 2: Convert to fraction form
    20,722.44/31,076.34 = 6,681.90/x
  3. Step 3: Cross multiply
    20,722.44x = 31,076.34 × 6,681.90
  4. Step 4: Simplify right side
    20,722.44x = 207,648,996.25
  5. Step 5: Solve for x
    x = 207,648,996.25/20,722.44
  6. Step 6: Final answer
    x = 10,020.49

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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.