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Finding the Fourth Proportional to 18,662.54, 27,994.01 and 5,515.02

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Solution

The fourth proportional to 18,662.54, 27,994.01 and 5,515.02 is: 8,272.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,662.54 : 27,994.01 = 5,515.02 : x
  2. Step 2: Convert to fraction form
    18,662.54/27,994.01 = 5,515.02/x
  3. Step 3: Cross multiply
    18,662.54x = 27,994.01 × 5,515.02
  4. Step 4: Simplify right side
    18,662.54x = 154,387,497.46
  5. Step 5: Solve for x
    x = 154,387,497.46/18,662.54
  6. Step 6: Final answer
    x = 8,272.59

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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.