Home / 20,820,363,740.16-28,732,101,961.42-11,909,692,493.16

Finding the Fourth Proportional to 20,820,363,740.16, 28,732,101,961.42 and 11,909,692,493.16

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Solution

The fourth proportional to 20,820,363,740.16, 28,732,101,961.42 and 11,909,692,493.16 is: 16,435,375,640.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,820,363,740.16 : 28,732,101,961.42 = 11,909,692,493.16 : x
  2. Step 2: Convert to fraction form
    20,820,363,740.16/28,732,101,961.42 = 11,909,692,493.16/x
  3. Step 3: Cross multiply
    20,820,363,740.16x = 28,732,101,961.42 × 11,909,692,493.16
  4. Step 4: Simplify right side
    20,820,363,740.16x = 342,190,499,042,468,954,112
  5. Step 5: Solve for x
    x = 342,190,499,042,468,954,112/20,820,363,740.16
  6. Step 6: Final answer
    x = 16,435,375,640.55

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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.