Home / 28,792.80-43,163.64-11,275.20

Finding the Fourth Proportional to 28,792.80, 43,163.64 and 11,275.20

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Solution

The fourth proportional to 28,792.80, 43,163.64 and 11,275.20 is: 16,902.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,792.80 : 43,163.64 = 11,275.20 : x
  2. Step 2: Convert to fraction form
    28,792.80/43,163.64 = 11,275.20/x
  3. Step 3: Cross multiply
    28,792.80x = 43,163.64 × 11,275.20
  4. Step 4: Simplify right side
    28,792.80x = 486,678,673.73
  5. Step 5: Solve for x
    x = 486,678,673.73/28,792.80
  6. Step 6: Final answer
    x = 16,902.79

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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.