Home / 20,543,653,816.90-30,805,766,643.21-7,958,406,850.36

Finding the Fourth Proportional to 20,543,653,816.90, 30,805,766,643.21 and 7,958,406,850.36

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Solution

The fourth proportional to 20,543,653,816.90, 30,805,766,643.21 and 7,958,406,850.36 is: 11,933,847,136.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543,653,816.90 : 30,805,766,643.21 = 7,958,406,850.36 : x
  2. Step 2: Convert to fraction form
    20,543,653,816.90/30,805,766,643.21 = 7,958,406,850.36/x
  3. Step 3: Cross multiply
    20,543,653,816.90x = 30,805,766,643.21 × 7,958,406,850.36
  4. Step 4: Simplify right side
    20,543,653,816.90x = 245,164,824,283,914,043,392
  5. Step 5: Solve for x
    x = 245,164,824,283,914,043,392/20,543,653,816.90
  6. Step 6: Final answer
    x = 11,933,847,136.88

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1.5x scale

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.