Home / 20,728,015.08-31,096,007.81-7,947,523.10

Finding the Fourth Proportional to 20,728,015.08, 31,096,007.81 and 7,947,523.10

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Solution

The fourth proportional to 20,728,015.08, 31,096,007.81 and 7,947,523.10 is: 11,922,812.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728,015.08 : 31,096,007.81 = 7,947,523.10 : x
  2. Step 2: Convert to fraction form
    20,728,015.08/31,096,007.81 = 7,947,523.10/x
  3. Step 3: Cross multiply
    20,728,015.08x = 31,096,007.81 × 7,947,523.10
  4. Step 4: Simplify right side
    20,728,015.08x = 247,136,240,387,755.38
  5. Step 5: Solve for x
    x = 247,136,240,387,755.38/20,728,015.08
  6. Step 6: Final answer
    x = 11,922,812.65

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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.