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Finding the Fourth Proportional to 39,104.97, 53,964.92 and 21,199.97

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Solution

The fourth proportional to 39,104.97, 53,964.92 and 21,199.97 is: 29,255.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,104.97 : 53,964.92 = 21,199.97 : x
  2. Step 2: Convert to fraction form
    39,104.97/53,964.92 = 21,199.97/x
  3. Step 3: Cross multiply
    39,104.97x = 53,964.92 × 21,199.97
  4. Step 4: Simplify right side
    39,104.97x = 1,144,054,579.05
  5. Step 5: Solve for x
    x = 1,144,054,579.05/39,104.97
  6. Step 6: Final answer
    x = 29,255.99

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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.