Home / 39,783.26-54,900.87-21,878.54

Finding the Fourth Proportional to 39,783.26, 54,900.87 and 21,878.54

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Solution

The fourth proportional to 39,783.26, 54,900.87 and 21,878.54 is: 30,192.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,783.26 : 54,900.87 = 21,878.54 : x
  2. Step 2: Convert to fraction form
    39,783.26/54,900.87 = 21,878.54/x
  3. Step 3: Cross multiply
    39,783.26x = 54,900.87 × 21,878.54
  4. Step 4: Simplify right side
    39,783.26x = 1,201,150,880.33
  5. Step 5: Solve for x
    x = 1,201,150,880.33/39,783.26
  6. Step 6: Final answer
    x = 30,192.37

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1.5x scale

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.