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Finding the Fourth Proportional to 18,684, 28,026.72 and 6,372

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Solution

The fourth proportional to 18,684, 28,026.72 and 6,372 is: 9,558.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684 : 28,026.72 = 6,372 : x
  2. Step 2: Convert to fraction form
    18,684/28,026.72 = 6,372/x
  3. Step 3: Cross multiply
    18,684x = 28,026.72 × 6,372
  4. Step 4: Simplify right side
    18,684x = 178,586,259.84
  5. Step 5: Solve for x
    x = 178,586,259.84/18,684
  6. Step 6: Final answer
    x = 9,558.25

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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.