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Finding the Fourth Proportional to 11,990.79, 16,547.39 and 6,685.95

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Solution

The fourth proportional to 11,990.79, 16,547.39 and 6,685.95 is: 9,226.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.79 : 16,547.39 = 6,685.95 : x
  2. Step 2: Convert to fraction form
    11,990.79/16,547.39 = 6,685.95/x
  3. Step 3: Cross multiply
    11,990.79x = 16,547.39 × 6,685.95
  4. Step 4: Simplify right side
    11,990.79x = 110,635,029.33
  5. Step 5: Solve for x
    x = 110,635,029.33/11,990.79
  6. Step 6: Final answer
    x = 9,226.67

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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.