Home / 12,179,968-18,269,249.28-3,660,121.60

Finding the Fourth Proportional to 12,179,968, 18,269,249.28 and 3,660,121.60

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Solution

The fourth proportional to 12,179,968, 18,269,249.28 and 3,660,121.60 is: 5,489,971.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,179,968 : 18,269,249.28 = 3,660,121.60 : x
  2. Step 2: Convert to fraction form
    12,179,968/18,269,249.28 = 3,660,121.60/x
  3. Step 3: Cross multiply
    12,179,968x = 18,269,249.28 × 3,660,121.60
  4. Step 4: Simplify right side
    12,179,968x = 66,867,673,905,512.45
  5. Step 5: Solve for x
    x = 66,867,673,905,512.45/12,179,968
  6. Step 6: Final answer
    x = 5,489,971.23

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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.