Home / 20,728,008.36-31,095,997.73-7,947,516.38

Finding the Fourth Proportional to 20,728,008.36, 31,095,997.73 and 7,947,516.38

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Solution

The fourth proportional to 20,728,008.36, 31,095,997.73 and 7,947,516.38 is: 11,922,802.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728,008.36 : 31,095,997.73 = 7,947,516.38 : x
  2. Step 2: Convert to fraction form
    20,728,008.36/31,095,997.73 = 7,947,516.38/x
  3. Step 3: Cross multiply
    20,728,008.36x = 31,095,997.73 × 7,947,516.38
  4. Step 4: Simplify right side
    20,728,008.36x = 247,135,951,116,400.25
  5. Step 5: Solve for x
    x = 247,135,951,116,400.25/20,728,008.36
  6. Step 6: Final answer
    x = 11,922,802.56

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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.