Home / 21,278,107.20-31,907,829.60-8,494,363.20

Finding the Fourth Proportional to 21,278,107.20, 31,907,829.60 and 8,494,363.20

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Solution

The fourth proportional to 21,278,107.20, 31,907,829.60 and 8,494,363.20 is: 12,737,819.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278,107.20 : 31,907,829.60 = 8,494,363.20 : x
  2. Step 2: Convert to fraction form
    21,278,107.20/31,907,829.60 = 8,494,363.20/x
  3. Step 3: Cross multiply
    21,278,107.20x = 31,907,829.60 × 8,494,363.20
  4. Step 4: Simplify right side
    21,278,107.20x = 271,036,693,546,110.72
  5. Step 5: Solve for x
    x = 271,036,693,546,110.72/21,278,107.20
  6. Step 6: Final answer
    x = 12,737,819.72

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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.