Home / 20,728,009.93-31,096,000.10-7,947,517.94

Finding the Fourth Proportional to 20,728,009.93, 31,096,000.10 and 7,947,517.94

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Solution

The fourth proportional to 20,728,009.93, 31,096,000.10 and 7,947,517.94 is: 11,922,804.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728,009.93 : 31,096,000.10 = 7,947,517.94 : x
  2. Step 2: Convert to fraction form
    20,728,009.93/31,096,000.10 = 7,947,517.94/x
  3. Step 3: Cross multiply
    20,728,009.93x = 31,096,000.10 × 7,947,517.94
  4. Step 4: Simplify right side
    20,728,009.93x = 247,136,018,656,991.81
  5. Step 5: Solve for x
    x = 247,136,018,656,991.81/20,728,009.93
  6. Step 6: Final answer
    x = 11,922,804.91

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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.