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Finding the Fourth Proportional to 11,966.60, 16,515.21 and 6,930.74

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Solution

The fourth proportional to 11,966.60, 16,515.21 and 6,930.74 is: 9,565.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,966.60 : 16,515.21 = 6,930.74 : x
  2. Step 2: Convert to fraction form
    11,966.60/16,515.21 = 6,930.74/x
  3. Step 3: Cross multiply
    11,966.60x = 16,515.21 × 6,930.74
  4. Step 4: Simplify right side
    11,966.60x = 114,462,626.56
  5. Step 5: Solve for x
    x = 114,462,626.56/11,966.60
  6. Step 6: Final answer
    x = 9,565.18

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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.