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Finding the Fourth Proportional to 16,290.74, 22,484.73 and 9,919.44

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Solution

The fourth proportional to 16,290.74, 22,484.73 and 9,919.44 is: 13,690.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,290.74 : 22,484.73 = 9,919.44 : x
  2. Step 2: Convert to fraction form
    16,290.74/22,484.73 = 9,919.44/x
  3. Step 3: Cross multiply
    16,290.74x = 22,484.73 × 9,919.44
  4. Step 4: Simplify right side
    16,290.74x = 223,035,876.21
  5. Step 5: Solve for x
    x = 223,035,876.21/16,290.74
  6. Step 6: Final answer
    x = 13,690.96

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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.