Home / 28,965.22-39,972.62-16,389.97

Finding the Fourth Proportional to 28,965.22, 39,972.62 and 16,389.97

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Solution

The fourth proportional to 28,965.22, 39,972.62 and 16,389.97 is: 22,618.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,965.22 : 39,972.62 = 16,389.97 : x
  2. Step 2: Convert to fraction form
    28,965.22/39,972.62 = 16,389.97/x
  3. Step 3: Cross multiply
    28,965.22x = 39,972.62 × 16,389.97
  4. Step 4: Simplify right side
    28,965.22x = 655,150,042.62
  5. Step 5: Solve for x
    x = 655,150,042.62/28,965.22
  6. Step 6: Final answer
    x = 22,618.51

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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.