Home / 21,187,922,812.46-31,770,848,662.25-9,992,791,088.23

Finding the Fourth Proportional to 21,187,922,812.46, 31,770,848,662.25 and 9,992,791,088.23

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Solution

The fourth proportional to 21,187,922,812.46, 31,770,848,662.25 and 9,992,791,088.23 is: 14,983,981,968.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187,922,812.46 : 31,770,848,662.25 = 9,992,791,088.23 : x
  2. Step 2: Convert to fraction form
    21,187,922,812.46/31,770,848,662.25 = 9,992,791,088.23/x
  3. Step 3: Cross multiply
    21,187,922,812.46x = 31,770,848,662.25 × 9,992,791,088.23
  4. Step 4: Simplify right side
    21,187,922,812.46x = 317,479,453,377,513,193,472
  5. Step 5: Solve for x
    x = 317,479,453,377,513,193,472/21,187,922,812.46
  6. Step 6: Final answer
    x = 14,983,981,968.76

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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.