Home / 20,977,231,078.80-31,460,807,770.20-12,114,905,216.40

Finding the Fourth Proportional to 20,977,231,078.80, 31,460,807,770.20 and 12,114,905,216.40

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Solution

The fourth proportional to 20,977,231,078.80, 31,460,807,770.20 and 12,114,905,216.40 is: 18,169,447,756.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977,231,078.80 : 31,460,807,770.20 = 12,114,905,216.40 : x
  2. Step 2: Convert to fraction form
    20,977,231,078.80/31,460,807,770.20 = 12,114,905,216.40/x
  3. Step 3: Cross multiply
    20,977,231,078.80x = 31,460,807,770.20 × 12,114,905,216.40
  4. Step 4: Simplify right side
    20,977,231,078.80x = 381,144,704,167,353,647,104
  5. Step 5: Solve for x
    x = 381,144,704,167,353,647,104/20,977,231,078.80
  6. Step 6: Final answer
    x = 18,169,447,756.74

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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.