Home / 20,820,363,754.31-28,732,101,980.96-11,909,692,507.31

Finding the Fourth Proportional to 20,820,363,754.31, 28,732,101,980.96 and 11,909,692,507.31

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Solution

The fourth proportional to 20,820,363,754.31, 28,732,101,980.96 and 11,909,692,507.31 is: 16,435,375,660.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,820,363,754.31 : 28,732,101,980.96 = 11,909,692,507.31 : x
  2. Step 2: Convert to fraction form
    20,820,363,754.31/28,732,101,980.96 = 11,909,692,507.31/x
  3. Step 3: Cross multiply
    20,820,363,754.31x = 28,732,101,980.96 × 11,909,692,507.31
  4. Step 4: Simplify right side
    20,820,363,754.31x = 342,190,499,681,904,033,792
  5. Step 5: Solve for x
    x = 342,190,499,681,904,033,792/20,820,363,754.31
  6. Step 6: Final answer
    x = 16,435,375,660.09

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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.