Home / 20,810,654,729.31-28,718,724,780.85-11,295,208,440.47

Finding the Fourth Proportional to 20,810,654,729.31, 28,718,724,780.85 and 11,295,208,440.47

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Solution

The fourth proportional to 20,810,654,729.31, 28,718,724,780.85 and 11,295,208,440.47 is: 15,587,399,183.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,810,654,729.31 : 28,718,724,780.85 = 11,295,208,440.47 : x
  2. Step 2: Convert to fraction form
    20,810,654,729.31/28,718,724,780.85 = 11,295,208,440.47/x
  3. Step 3: Cross multiply
    20,810,654,729.31x = 28,718,724,780.85 × 11,295,208,440.47
  4. Step 4: Simplify right side
    20,810,654,729.31x = 324,383,982,544,191,815,680
  5. Step 5: Solve for x
    x = 324,383,982,544,191,815,680/20,810,654,729.31
  6. Step 6: Final answer
    x = 15,587,399,183.91

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1.5x scale

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.