Home / 13,191,987,420.80-19,787,981,131.20-11,885,918,019.20

Finding the Fourth Proportional to 13,191,987,420.80, 19,787,981,131.20 and 11,885,918,019.20

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Solution

The fourth proportional to 13,191,987,420.80, 19,787,981,131.20 and 11,885,918,019.20 is: 17,828,877,028.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191,987,420.80 : 19,787,981,131.20 = 11,885,918,019.20 : x
  2. Step 2: Convert to fraction form
    13,191,987,420.80/19,787,981,131.20 = 11,885,918,019.20/x
  3. Step 3: Cross multiply
    13,191,987,420.80x = 19,787,981,131.20 × 11,885,918,019.20
  4. Step 4: Simplify right side
    13,191,987,420.80x = 235,198,321,490,919,718,912
  5. Step 5: Solve for x
    x = 235,198,321,490,919,718,912/13,191,987,420.80
  6. Step 6: Final answer
    x = 17,828,877,028.80

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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.