Home / 21,474,121.89-29,622,995.42-12,766,100.25

Finding the Fourth Proportional to 21,474,121.89, 29,622,995.42 and 12,766,100.25

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Solution

The fourth proportional to 21,474,121.89, 29,622,995.42 and 12,766,100.25 is: 17,610,504.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,474,121.89 : 29,622,995.42 = 12,766,100.25 : x
  2. Step 2: Convert to fraction form
    21,474,121.89/29,622,995.42 = 12,766,100.25/x
  3. Step 3: Cross multiply
    21,474,121.89x = 29,622,995.42 × 12,766,100.25
  4. Step 4: Simplify right side
    21,474,121.89x = 378,170,129,173,180.31
  5. Step 5: Solve for x
    x = 378,170,129,173,180.31/21,474,121.89
  6. Step 6: Final answer
    x = 17,610,504.92

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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.