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Finding the Fourth Proportional to 18,412.36, 27,479.42 and 17,163.88

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Solution

The fourth proportional to 18,412.36, 27,479.42 and 17,163.88 is: 25,616.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,412.36 : 27,479.42 = 17,163.88 : x
  2. Step 2: Convert to fraction form
    18,412.36/27,479.42 = 17,163.88/x
  3. Step 3: Cross multiply
    18,412.36x = 27,479.42 × 17,163.88
  4. Step 4: Simplify right side
    18,412.36x = 471,653,467.35
  5. Step 5: Solve for x
    x = 471,653,467.35/18,412.36
  6. Step 6: Final answer
    x = 25,616.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.