Home / 20,543,653,817.90-30,805,766,644.71-7,958,406,851.36

Finding the Fourth Proportional to 20,543,653,817.90, 30,805,766,644.71 and 7,958,406,851.36

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Solution

The fourth proportional to 20,543,653,817.90, 30,805,766,644.71 and 7,958,406,851.36 is: 11,933,847,138.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543,653,817.90 : 30,805,766,644.71 = 7,958,406,851.36 : x
  2. Step 2: Convert to fraction form
    20,543,653,817.90/30,805,766,644.71 = 7,958,406,851.36/x
  3. Step 3: Cross multiply
    20,543,653,817.90x = 30,805,766,644.71 × 7,958,406,851.36
  4. Step 4: Simplify right side
    20,543,653,817.90x = 245,164,824,326,657,409,024
  5. Step 5: Solve for x
    x = 245,164,824,326,657,409,024/20,543,653,817.90
  6. Step 6: Final answer
    x = 11,933,847,138.38

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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.