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Finding the Fourth Proportional to 18,422.40, 27,633.60 and 17,110.20

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Solution

The fourth proportional to 18,422.40, 27,633.60 and 17,110.20 is: 25,665.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,422.40 : 27,633.60 = 17,110.20 : x
  2. Step 2: Convert to fraction form
    18,422.40/27,633.60 = 17,110.20/x
  3. Step 3: Cross multiply
    18,422.40x = 27,633.60 × 17,110.20
  4. Step 4: Simplify right side
    18,422.40x = 472,816,422.72
  5. Step 5: Solve for x
    x = 472,816,422.72/18,422.40
  6. Step 6: Final answer
    x = 25,665.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.