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Finding the Fourth Proportional to 10,640,938.80, 15,963,481.80 and 4,250,103.60

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Solution

The fourth proportional to 10,640,938.80, 15,963,481.80 and 4,250,103.60 is: 6,375,983.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,640,938.80 : 15,963,481.80 = 4,250,103.60 : x
  2. Step 2: Convert to fraction form
    10,640,938.80/15,963,481.80 = 4,250,103.60/x
  3. Step 3: Cross multiply
    10,640,938.80x = 15,963,481.80 × 4,250,103.60
  4. Step 4: Simplify right side
    10,640,938.80x = 67,846,451,466,714.48
  5. Step 5: Solve for x
    x = 67,846,451,466,714.48/10,640,938.80
  6. Step 6: Final answer
    x = 6,375,983.62

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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.