Home / 20,898,010.80-31,347,016.20-18,665,958.60

Finding the Fourth Proportional to 20,898,010.80, 31,347,016.20 and 18,665,958.60

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Solution

The fourth proportional to 20,898,010.80, 31,347,016.20 and 18,665,958.60 is: 27,998,937.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898,010.80 : 31,347,016.20 = 18,665,958.60 : x
  2. Step 2: Convert to fraction form
    20,898,010.80/31,347,016.20 = 18,665,958.60/x
  3. Step 3: Cross multiply
    20,898,010.80x = 31,347,016.20 × 18,665,958.60
  4. Step 4: Simplify right side
    20,898,010.80x = 585,122,106,622,729.38
  5. Step 5: Solve for x
    x = 585,122,106,622,729.38/20,898,010.80
  6. Step 6: Final answer
    x = 27,998,937.90

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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.