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Finding the Fourth Proportional to 30,067.84, 41,493.84 and 18,128.80

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Solution

The fourth proportional to 30,067.84, 41,493.84 and 18,128.80 is: 25,017.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,067.84 : 41,493.84 = 18,128.80 : x
  2. Step 2: Convert to fraction form
    30,067.84/41,493.84 = 18,128.80/x
  3. Step 3: Cross multiply
    30,067.84x = 41,493.84 × 18,128.80
  4. Step 4: Simplify right side
    30,067.84x = 752,233,526.59
  5. Step 5: Solve for x
    x = 752,233,526.59/30,067.84
  6. Step 6: Final answer
    x = 25,017.88

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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.