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Finding the Fourth Proportional to 11,810.58, 16,285.08 and 8,821.38

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Solution

The fourth proportional to 11,810.58, 16,285.08 and 8,821.38 is: 12,163.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,810.58 : 16,285.08 = 8,821.38 : x
  2. Step 2: Convert to fraction form
    11,810.58/16,285.08 = 8,821.38/x
  3. Step 3: Cross multiply
    11,810.58x = 16,285.08 × 8,821.38
  4. Step 4: Simplify right side
    11,810.58x = 143,656,879.01
  5. Step 5: Solve for x
    x = 143,656,879.01/11,810.58
  6. Step 6: Final answer
    x = 12,163.41

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1.5x scale

Why These Related Problems?

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