Home / 20,728,007.60-31,095,996.60-7,947,515.60

Finding the Fourth Proportional to 20,728,007.60, 31,095,996.60 and 7,947,515.60

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Solution

The fourth proportional to 20,728,007.60, 31,095,996.60 and 7,947,515.60 is: 11,922,801.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728,007.60 : 31,095,996.60 = 7,947,515.60 : x
  2. Step 2: Convert to fraction form
    20,728,007.60/31,095,996.60 = 7,947,515.60/x
  3. Step 3: Cross multiply
    20,728,007.60x = 31,095,996.60 × 7,947,515.60
  4. Step 4: Simplify right side
    20,728,007.60x = 247,135,918,076,046.97
  5. Step 5: Solve for x
    x = 247,135,918,076,046.97/20,728,007.60
  6. Step 6: Final answer
    x = 11,922,801.40

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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.