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Finding the Fourth Proportional to 18,984, 28,476 and 6,672

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Solution

The fourth proportional to 18,984, 28,476 and 6,672 is: 10,008

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,984 : 28,476 = 6,672 : x
  2. Step 2: Convert to fraction form
    18,984/28,476 = 6,672/x
  3. Step 3: Cross multiply
    18,984x = 28,476 × 6,672
  4. Step 4: Simplify right side
    18,984x = 189,991,872
  5. Step 5: Solve for x
    x = 189,991,872/18,984
  6. Step 6: Final answer
    x = 10,008

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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.