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Finding the Fourth Proportional to 18,361,893.20, 27,542,839.80 and 15,170,622.80

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Solution

The fourth proportional to 18,361,893.20, 27,542,839.80 and 15,170,622.80 is: 22,755,934.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,361,893.20 : 27,542,839.80 = 15,170,622.80 : x
  2. Step 2: Convert to fraction form
    18,361,893.20/27,542,839.80 = 15,170,622.80/x
  3. Step 3: Cross multiply
    18,361,893.20x = 27,542,839.80 × 15,170,622.80
  4. Step 4: Simplify right side
    18,361,893.20x = 417,842,033,446,627.50
  5. Step 5: Solve for x
    x = 417,842,033,446,627.50/18,361,893.20
  6. Step 6: Final answer
    x = 22,755,934.20

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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.