Home / 21,187,922,811.71-31,770,848,661.12-9,992,791,087.48

Finding the Fourth Proportional to 21,187,922,811.71, 31,770,848,661.12 and 9,992,791,087.48

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Solution

The fourth proportional to 21,187,922,811.71, 31,770,848,661.12 and 9,992,791,087.48 is: 14,983,981,967.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187,922,811.71 : 31,770,848,661.12 = 9,992,791,087.48 : x
  2. Step 2: Convert to fraction form
    21,187,922,811.71/31,770,848,661.12 = 9,992,791,087.48/x
  3. Step 3: Cross multiply
    21,187,922,811.71x = 31,770,848,661.12 × 9,992,791,087.48
  4. Step 4: Simplify right side
    21,187,922,811.71x = 317,479,453,342,436,425,728
  5. Step 5: Solve for x
    x = 317,479,453,342,436,425,728/21,187,922,811.71
  6. Step 6: Final answer
    x = 14,983,981,967.64

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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.