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Finding the Fourth Proportional to 16,505.58, 22,782.86 and 11,135.78

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Solution

The fourth proportional to 16,505.58, 22,782.86 and 11,135.78 is: 15,370.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,505.58 : 22,782.86 = 11,135.78 : x
  2. Step 2: Convert to fraction form
    16,505.58/22,782.86 = 11,135.78/x
  3. Step 3: Cross multiply
    16,505.58x = 22,782.86 × 11,135.78
  4. Step 4: Simplify right side
    16,505.58x = 253,704,916.73
  5. Step 5: Solve for x
    x = 253,704,916.73/16,505.58
  6. Step 6: Final answer
    x = 15,370.86

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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.