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Finding the Fourth Proportional to 28,903, 43,354.50 and 8,126.50

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Solution

The fourth proportional to 28,903, 43,354.50 and 8,126.50 is: 12,189.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,903 : 43,354.50 = 8,126.50 : x
  2. Step 2: Convert to fraction form
    28,903/43,354.50 = 8,126.50/x
  3. Step 3: Cross multiply
    28,903x = 43,354.50 × 8,126.50
  4. Step 4: Simplify right side
    28,903x = 352,320,344.25
  5. Step 5: Solve for x
    x = 352,320,344.25/28,903
  6. Step 6: Final answer
    x = 12,189.75

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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.