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Finding the Fourth Proportional to 14,181, 21,274.67 and 4,321.05

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Solution

The fourth proportional to 14,181, 21,274.67 and 4,321.05 is: 6,482.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,181 : 21,274.67 = 4,321.05 : x
  2. Step 2: Convert to fraction form
    14,181/21,274.67 = 4,321.05/x
  3. Step 3: Cross multiply
    14,181x = 21,274.67 × 4,321.05
  4. Step 4: Simplify right side
    14,181x = 91,928,912.80
  5. Step 5: Solve for x
    x = 91,928,912.80/14,181
  6. Step 6: Final answer
    x = 6,482.54

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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.