Home / 20,658,279.67-30,991,202.21-8,521,121.95

Finding the Fourth Proportional to 20,658,279.67, 30,991,202.21 and 8,521,121.95

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Solution

The fourth proportional to 20,658,279.67, 30,991,202.21 and 8,521,121.95 is: 12,783,243.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658,279.67 : 30,991,202.21 = 8,521,121.95 : x
  2. Step 2: Convert to fraction form
    20,658,279.67/30,991,202.21 = 8,521,121.95/x
  3. Step 3: Cross multiply
    20,658,279.67x = 30,991,202.21 × 8,521,121.95
  4. Step 4: Simplify right side
    20,658,279.67x = 264,079,813,408,519.50
  5. Step 5: Solve for x
    x = 264,079,813,408,519.50/20,658,279.67
  6. Step 6: Final answer
    x = 12,783,243.21

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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.