Home / 20,016,115.70-30,012,796.11-7,878,999.38

Finding the Fourth Proportional to 20,016,115.70, 30,012,796.11 and 7,878,999.38

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Solution

The fourth proportional to 20,016,115.70, 30,012,796.11 and 7,878,999.38 is: 11,814,020.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,016,115.70 : 30,012,796.11 = 7,878,999.38 : x
  2. Step 2: Convert to fraction form
    20,016,115.70/30,012,796.11 = 7,878,999.38/x
  3. Step 3: Cross multiply
    20,016,115.70x = 30,012,796.11 × 7,878,999.38
  4. Step 4: Simplify right side
    20,016,115.70x = 236,470,801,942,756.41
  5. Step 5: Solve for x
    x = 236,470,801,942,756.41/20,016,115.70
  6. Step 6: Final answer
    x = 11,814,020.54

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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.