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Finding the Fourth Proportional to 18,388.36, 27,582.72 and 7,297.72

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Solution

The fourth proportional to 18,388.36, 27,582.72 and 7,297.72 is: 10,946.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388.36 : 27,582.72 = 7,297.72 : x
  2. Step 2: Convert to fraction form
    18,388.36/27,582.72 = 7,297.72/x
  3. Step 3: Cross multiply
    18,388.36x = 27,582.72 × 7,297.72
  4. Step 4: Simplify right side
    18,388.36x = 201,290,967.40
  5. Step 5: Solve for x
    x = 201,290,967.40/18,388.36
  6. Step 6: Final answer
    x = 10,946.65

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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.