Home / 21,172,812.60-31,759,218.90-20,747,659.80

Finding the Fourth Proportional to 21,172,812.60, 31,759,218.90 and 20,747,659.80

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Solution

The fourth proportional to 21,172,812.60, 31,759,218.90 and 20,747,659.80 is: 31,121,489.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172,812.60 : 31,759,218.90 = 20,747,659.80 : x
  2. Step 2: Convert to fraction form
    21,172,812.60/31,759,218.90 = 20,747,659.80/x
  3. Step 3: Cross multiply
    21,172,812.60x = 31,759,218.90 × 20,747,659.80
  4. Step 4: Simplify right side
    21,172,812.60x = 658,929,469,250,930.25
  5. Step 5: Solve for x
    x = 658,929,469,250,930.25/21,172,812.60
  6. Step 6: Final answer
    x = 31,121,489.70

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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.