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Finding the Fourth Proportional to 18,774.67, 28,169.84 and 8,239.25

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Solution

The fourth proportional to 18,774.67, 28,169.84 and 8,239.25 is: 12,362.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774.67 : 28,169.84 = 8,239.25 : x
  2. Step 2: Convert to fraction form
    18,774.67/28,169.84 = 8,239.25/x
  3. Step 3: Cross multiply
    18,774.67x = 28,169.84 × 8,239.25
  4. Step 4: Simplify right side
    18,774.67x = 232,098,354.22
  5. Step 5: Solve for x
    x = 232,098,354.22/18,774.67
  6. Step 6: Final answer
    x = 12,362.31

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1.5x scale

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.