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Finding the Fourth Proportional to 18,371.32, 27,539.16 and 7,274.32

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Solution

The fourth proportional to 18,371.32, 27,539.16 and 7,274.32 is: 10,904.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,371.32 : 27,539.16 = 7,274.32 : x
  2. Step 2: Convert to fraction form
    18,371.32/27,539.16 = 7,274.32/x
  3. Step 3: Cross multiply
    18,371.32x = 27,539.16 × 7,274.32
  4. Step 4: Simplify right side
    18,371.32x = 200,328,662.37
  5. Step 5: Solve for x
    x = 200,328,662.37/18,371.32
  6. Step 6: Final answer
    x = 10,904.42

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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.