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Finding the Fourth Proportional to 28,098.82, 38,776.34 and 16,161.85

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Solution

The fourth proportional to 28,098.82, 38,776.34 and 16,161.85 is: 22,303.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,098.82 : 38,776.34 = 16,161.85 : x
  2. Step 2: Convert to fraction form
    28,098.82/38,776.34 = 16,161.85/x
  3. Step 3: Cross multiply
    28,098.82x = 38,776.34 × 16,161.85
  4. Step 4: Simplify right side
    28,098.82x = 626,697,115.94
  5. Step 5: Solve for x
    x = 626,697,115.94/28,098.82
  6. Step 6: Final answer
    x = 22,303.33

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.