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Finding the Fourth Proportional to 20,682,816.40, 30,968,237.40 and 16,203,840.40

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Solution

The fourth proportional to 20,682,816.40, 30,968,237.40 and 16,203,840.40 is: 24,261,897.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682,816.40 : 30,968,237.40 = 16,203,840.40 : x
  2. Step 2: Convert to fraction form
    20,682,816.40/30,968,237.40 = 16,203,840.40/x
  3. Step 3: Cross multiply
    20,682,816.40x = 30,968,237.40 × 16,203,840.40
  4. Step 4: Simplify right side
    20,682,816.40x = 501,804,376,298,910.94
  5. Step 5: Solve for x
    x = 501,804,376,298,910.94/20,682,816.40
  6. Step 6: Final answer
    x = 24,261,897.73

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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.