Home / 20,971,428,110.80-31,469,235,401.40-7,894,609,781.20

Finding the Fourth Proportional to 20,971,428,110.80, 31,469,235,401.40 and 7,894,609,781.20

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Solution

The fourth proportional to 20,971,428,110.80, 31,469,235,401.40 and 7,894,609,781.20 is: 11,846,467,121.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971,428,110.80 : 31,469,235,401.40 = 7,894,609,781.20 : x
  2. Step 2: Convert to fraction form
    20,971,428,110.80/31,469,235,401.40 = 7,894,609,781.20/x
  3. Step 3: Cross multiply
    20,971,428,110.80x = 31,469,235,401.40 × 7,894,609,781.20
  4. Step 4: Simplify right side
    20,971,428,110.80x = 248,437,333,606,777,749,504
  5. Step 5: Solve for x
    x = 248,437,333,606,777,749,504/20,971,428,110.80
  6. Step 6: Final answer
    x = 11,846,467,121.56

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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.