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Finding the Fourth Proportional to 14,836.66, 20,473.80 and 8,120.99

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Solution

The fourth proportional to 14,836.66, 20,473.80 and 8,120.99 is: 11,206.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,836.66 : 20,473.80 = 8,120.99 : x
  2. Step 2: Convert to fraction form
    14,836.66/20,473.80 = 8,120.99/x
  3. Step 3: Cross multiply
    14,836.66x = 20,473.80 × 8,120.99
  4. Step 4: Simplify right side
    14,836.66x = 166,267,525.06
  5. Step 5: Solve for x
    x = 166,267,525.06/14,836.66
  6. Step 6: Final answer
    x = 11,206.53

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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.