Home / 39,105.09-53,964.71-21,199.64

Finding the Fourth Proportional to 39,105.09, 53,964.71 and 21,199.64

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Solution

The fourth proportional to 39,105.09, 53,964.71 and 21,199.64 is: 29,255.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,105.09 : 53,964.71 = 21,199.64 : x
  2. Step 2: Convert to fraction form
    39,105.09/53,964.71 = 21,199.64/x
  3. Step 3: Cross multiply
    39,105.09x = 53,964.71 × 21,199.64
  4. Step 4: Simplify right side
    39,105.09x = 1,144,032,048.88
  5. Step 5: Solve for x
    x = 1,144,032,048.88/39,105.09
  6. Step 6: Final answer
    x = 29,255.32

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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.