Home / 21,942,615,982.32-30,280,295,003.85-12,910,959,078.84

Finding the Fourth Proportional to 21,942,615,982.32, 30,280,295,003.85 and 12,910,959,078.84

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Solution

The fourth proportional to 21,942,615,982.32, 30,280,295,003.85 and 12,910,959,078.84 is: 17,816,820,474.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,942,615,982.32 : 30,280,295,003.85 = 12,910,959,078.84 : x
  2. Step 2: Convert to fraction form
    21,942,615,982.32/30,280,295,003.85 = 12,910,959,078.84/x
  3. Step 3: Cross multiply
    21,942,615,982.32x = 30,280,295,003.85 × 12,910,959,078.84
  4. Step 4: Simplify right side
    21,942,615,982.32x = 390,947,649,689,910,640,640
  5. Step 5: Solve for x
    x = 390,947,649,689,910,640,640/21,942,615,982.32
  6. Step 6: Final answer
    x = 17,816,820,474.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.