Home / 20,850,016.80-31,278,135.60-7,385,786.40

Finding the Fourth Proportional to 20,850,016.80, 31,278,135.60 and 7,385,786.40

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Solution

The fourth proportional to 20,850,016.80, 31,278,135.60 and 7,385,786.40 is: 11,079,781.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850,016.80 : 31,278,135.60 = 7,385,786.40 : x
  2. Step 2: Convert to fraction form
    20,850,016.80/31,278,135.60 = 7,385,786.40/x
  3. Step 3: Cross multiply
    20,850,016.80x = 31,278,135.60 × 7,385,786.40
  4. Step 4: Simplify right side
    20,850,016.80x = 231,013,628,531,835.88
  5. Step 5: Solve for x
    x = 231,013,628,531,835.88/20,850,016.80
  6. Step 6: Final answer
    x = 11,079,781.41

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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.