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Finding the Fourth Proportional to 18,372, 27,557.88 and 5,224.32

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Solution

The fourth proportional to 18,372, 27,557.88 and 5,224.32 is: 7,836.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,372 : 27,557.88 = 5,224.32 : x
  2. Step 2: Convert to fraction form
    18,372/27,557.88 = 5,224.32/x
  3. Step 3: Cross multiply
    18,372x = 27,557.88 × 5,224.32
  4. Step 4: Simplify right side
    18,372x = 143,971,183.64
  5. Step 5: Solve for x
    x = 143,971,183.64/18,372
  6. Step 6: Final answer
    x = 7,836.45

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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.