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Finding the Fourth Proportional to 18,858, 28,287 and 6,546

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Solution

The fourth proportional to 18,858, 28,287 and 6,546 is: 9,819

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,858 : 28,287 = 6,546 : x
  2. Step 2: Convert to fraction form
    18,858/28,287 = 6,546/x
  3. Step 3: Cross multiply
    18,858x = 28,287 × 6,546
  4. Step 4: Simplify right side
    18,858x = 185,166,702
  5. Step 5: Solve for x
    x = 185,166,702/18,858
  6. Step 6: Final answer
    x = 9,819

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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.