Home / 20,898,015.80-31,347,023.70-18,665,963.60

Finding the Fourth Proportional to 20,898,015.80, 31,347,023.70 and 18,665,963.60

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Solution

The fourth proportional to 20,898,015.80, 31,347,023.70 and 18,665,963.60 is: 27,998,945.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898,015.80 : 31,347,023.70 = 18,665,963.60 : x
  2. Step 2: Convert to fraction form
    20,898,015.80/31,347,023.70 = 18,665,963.60/x
  3. Step 3: Cross multiply
    20,898,015.80x = 31,347,023.70 × 18,665,963.60
  4. Step 4: Simplify right side
    20,898,015.80x = 585,122,403,352,537.38
  5. Step 5: Solve for x
    x = 585,122,403,352,537.38/20,898,015.80
  6. Step 6: Final answer
    x = 27,998,945.40

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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.