Home / 20,810,654,728.31-28,718,724,779.47-11,295,208,439.47

Finding the Fourth Proportional to 20,810,654,728.31, 28,718,724,779.47 and 11,295,208,439.47

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Solution

The fourth proportional to 20,810,654,728.31, 28,718,724,779.47 and 11,295,208,439.47 is: 15,587,399,182.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,810,654,728.31 : 28,718,724,779.47 = 11,295,208,439.47 : x
  2. Step 2: Convert to fraction form
    20,810,654,728.31/28,718,724,779.47 = 11,295,208,439.47/x
  3. Step 3: Cross multiply
    20,810,654,728.31x = 28,718,724,779.47 × 11,295,208,439.47
  4. Step 4: Simplify right side
    20,810,654,728.31x = 324,383,982,499,954,491,392
  5. Step 5: Solve for x
    x = 324,383,982,499,954,491,392/20,810,654,728.31
  6. Step 6: Final answer
    x = 15,587,399,182.53

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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.