Home / 20,702,525,012.80-31,022,188,136.16-12,291,868,369.60

Finding the Fourth Proportional to 20,702,525,012.80, 31,022,188,136.16 and 12,291,868,369.60

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Solution

The fourth proportional to 20,702,525,012.80, 31,022,188,136.16 and 12,291,868,369.60 is: 18,419,040,811.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702,525,012.80 : 31,022,188,136.16 = 12,291,868,369.60 : x
  2. Step 2: Convert to fraction form
    20,702,525,012.80/31,022,188,136.16 = 12,291,868,369.60/x
  3. Step 3: Cross multiply
    20,702,525,012.80x = 31,022,188,136.16 × 12,291,868,369.60
  4. Step 4: Simplify right side
    20,702,525,012.80x = 381,320,653,106,645,499,904
  5. Step 5: Solve for x
    x = 381,320,653,106,645,499,904/20,702,525,012.80
  6. Step 6: Final answer
    x = 18,419,040,811.25

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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.