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Finding the Fourth Proportional to 18,745.83, 28,104.82 and 11,348.66

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Solution

The fourth proportional to 18,745.83, 28,104.82 and 11,348.66 is: 17,014.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,745.83 : 28,104.82 = 11,348.66 : x
  2. Step 2: Convert to fraction form
    18,745.83/28,104.82 = 11,348.66/x
  3. Step 3: Cross multiply
    18,745.83x = 28,104.82 × 11,348.66
  4. Step 4: Simplify right side
    18,745.83x = 318,951,994.18
  5. Step 5: Solve for x
    x = 318,951,994.18/18,745.83
  6. Step 6: Final answer
    x = 17,014.56

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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.