Home / 28,718,653.97-39,631,694.43-15,665,912.88

Finding the Fourth Proportional to 28,718,653.97, 39,631,694.43 and 15,665,912.88

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Solution

The fourth proportional to 28,718,653.97, 39,631,694.43 and 15,665,912.88 is: 21,618,933.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718,653.97 : 39,631,694.43 = 15,665,912.88 : x
  2. Step 2: Convert to fraction form
    28,718,653.97/39,631,694.43 = 15,665,912.88/x
  3. Step 3: Cross multiply
    28,718,653.97x = 39,631,694.43 × 15,665,912.88
  4. Step 4: Simplify right side
    28,718,653.97x = 620,866,672,227,161.25
  5. Step 5: Solve for x
    x = 620,866,672,227,161.25/28,718,653.97
  6. Step 6: Final answer
    x = 21,618,933.56

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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.