Home / 21,290,942,660.80-31,936,413,991.20-13,025,972,228.80

Finding the Fourth Proportional to 21,290,942,660.80, 31,936,413,991.20 and 13,025,972,228.80

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Solution

The fourth proportional to 21,290,942,660.80, 31,936,413,991.20 and 13,025,972,228.80 is: 19,538,958,343.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,290,942,660.80 : 31,936,413,991.20 = 13,025,972,228.80 : x
  2. Step 2: Convert to fraction form
    21,290,942,660.80/31,936,413,991.20 = 13,025,972,228.80/x
  3. Step 3: Cross multiply
    21,290,942,660.80x = 31,936,413,991.20 × 13,025,972,228.80
  4. Step 4: Simplify right side
    21,290,942,660.80x = 416,002,841,736,830,976,000
  5. Step 5: Solve for x
    x = 416,002,841,736,830,976,000/21,290,942,660.80
  6. Step 6: Final answer
    x = 19,538,958,343.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.