Home / 20,912,671.41-28,860,136.17-11,493,291.50

Finding the Fourth Proportional to 20,912,671.41, 28,860,136.17 and 11,493,291.50

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Solution

The fourth proportional to 20,912,671.41, 28,860,136.17 and 11,493,291.50 is: 15,861,099.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912,671.41 : 28,860,136.17 = 11,493,291.50 : x
  2. Step 2: Convert to fraction form
    20,912,671.41/28,860,136.17 = 11,493,291.50/x
  3. Step 3: Cross multiply
    20,912,671.41x = 28,860,136.17 × 11,493,291.50
  4. Step 4: Simplify right side
    20,912,671.41x = 331,697,957,587,202.88
  5. Step 5: Solve for x
    x = 331,697,957,587,202.88/20,912,671.41
  6. Step 6: Final answer
    x = 15,861,099.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.