Home / 20,728,007.56-31,095,996.54-7,947,515.58

Finding the Fourth Proportional to 20,728,007.56, 31,095,996.54 and 7,947,515.58

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Solution

The fourth proportional to 20,728,007.56, 31,095,996.54 and 7,947,515.58 is: 11,922,801.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728,007.56 : 31,095,996.54 = 7,947,515.58 : x
  2. Step 2: Convert to fraction form
    20,728,007.56/31,095,996.54 = 7,947,515.58/x
  3. Step 3: Cross multiply
    20,728,007.56x = 31,095,996.54 × 7,947,515.58
  4. Step 4: Simplify right side
    20,728,007.56x = 247,135,916,830,862.91
  5. Step 5: Solve for x
    x = 247,135,916,830,862.91/20,728,007.56
  6. Step 6: Final answer
    x = 11,922,801.36

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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.