Home / 28,917.16-39,889.74-19,969.36

Finding the Fourth Proportional to 28,917.16, 39,889.74 and 19,969.36

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Solution

The fourth proportional to 28,917.16, 39,889.74 and 19,969.36 is: 27,546.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,917.16 : 39,889.74 = 19,969.36 : x
  2. Step 2: Convert to fraction form
    28,917.16/39,889.74 = 19,969.36/x
  3. Step 3: Cross multiply
    28,917.16x = 39,889.74 × 19,969.36
  4. Step 4: Simplify right side
    28,917.16x = 796,572,578.37
  5. Step 5: Solve for x
    x = 796,572,578.37/28,917.16
  6. Step 6: Final answer
    x = 27,546.71

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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.