Home / 39,103.97-53,963.75-21,199.25

Finding the Fourth Proportional to 39,103.97, 53,963.75 and 21,199.25

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Solution

The fourth proportional to 39,103.97, 53,963.75 and 21,199.25 is: 29,255.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,103.97 : 53,963.75 = 21,199.25 : x
  2. Step 2: Convert to fraction form
    39,103.97/53,963.75 = 21,199.25/x
  3. Step 3: Cross multiply
    39,103.97x = 53,963.75 × 21,199.25
  4. Step 4: Simplify right side
    39,103.97x = 1,143,990,921.19
  5. Step 5: Solve for x
    x = 1,143,990,921.19/39,103.97
  6. Step 6: Final answer
    x = 29,255.11

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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.