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Finding the Fourth Proportional to 13,998,480.80, 20,997,721.20 and 3,901,101.80

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Solution

The fourth proportional to 13,998,480.80, 20,997,721.20 and 3,901,101.80 is: 5,851,652.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998,480.80 : 20,997,721.20 = 3,901,101.80 : x
  2. Step 2: Convert to fraction form
    13,998,480.80/20,997,721.20 = 3,901,101.80/x
  3. Step 3: Cross multiply
    13,998,480.80x = 20,997,721.20 × 3,901,101.80
  4. Step 4: Simplify right side
    13,998,480.80x = 81,914,247,969,218.16
  5. Step 5: Solve for x
    x = 81,914,247,969,218.16/13,998,480.80
  6. Step 6: Final answer
    x = 5,851,652.70

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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.