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Finding the Fourth Proportional to 11,690.77, 16,133.15 and 6,385.61

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Solution

The fourth proportional to 11,690.77, 16,133.15 and 6,385.61 is: 8,812.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,690.77 : 16,133.15 = 6,385.61 : x
  2. Step 2: Convert to fraction form
    11,690.77/16,133.15 = 6,385.61/x
  3. Step 3: Cross multiply
    11,690.77x = 16,133.15 × 6,385.61
  4. Step 4: Simplify right side
    11,690.77x = 103,019,939.27
  5. Step 5: Solve for x
    x = 103,019,939.27/11,690.77
  6. Step 6: Final answer
    x = 8,812.08

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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.