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Finding the Fourth Proportional to 11,205.32, 16,812.78 and 4,636.28

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Solution

The fourth proportional to 11,205.32, 16,812.78 and 4,636.28 is: 6,956.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,205.32 : 16,812.78 = 4,636.28 : x
  2. Step 2: Convert to fraction form
    11,205.32/16,812.78 = 4,636.28/x
  3. Step 3: Cross multiply
    11,205.32x = 16,812.78 × 4,636.28
  4. Step 4: Simplify right side
    11,205.32x = 77,948,755.66
  5. Step 5: Solve for x
    x = 77,948,755.66/11,205.32
  6. Step 6: Final answer
    x = 6,956.41

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.