Home / 20,728,014.42-31,096,006.85-7,947,522.43

Finding the Fourth Proportional to 20,728,014.42, 31,096,006.85 and 7,947,522.43

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Solution

The fourth proportional to 20,728,014.42, 31,096,006.85 and 7,947,522.43 is: 11,922,811.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728,014.42 : 31,096,006.85 = 7,947,522.43 : x
  2. Step 2: Convert to fraction form
    20,728,014.42/31,096,006.85 = 7,947,522.43/x
  3. Step 3: Cross multiply
    20,728,014.42x = 31,096,006.85 × 7,947,522.43
  4. Step 4: Simplify right side
    20,728,014.42x = 247,136,211,923,808.66
  5. Step 5: Solve for x
    x = 247,136,211,923,808.66/20,728,014.42
  6. Step 6: Final answer
    x = 11,922,811.66

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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.