Home / 20,728,147-28,604,842.86-11,560,797.04

Finding the Fourth Proportional to 20,728,147, 28,604,842.86 and 11,560,797.04

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Solution

The fourth proportional to 20,728,147, 28,604,842.86 and 11,560,797.04 is: 15,953,899.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728,147 : 28,604,842.86 = 11,560,797.04 : x
  2. Step 2: Convert to fraction form
    20,728,147/28,604,842.86 = 11,560,797.04/x
  3. Step 3: Cross multiply
    20,728,147x = 28,604,842.86 × 11,560,797.04
  4. Step 4: Simplify right side
    20,728,147x = 330,694,782,665,553.12
  5. Step 5: Solve for x
    x = 330,694,782,665,553.12/20,728,147
  6. Step 6: Final answer
    x = 15,953,899.92

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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.