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Finding the Fourth Proportional to 14,913.18, 20,580.21 and 8,198.92

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Solution

The fourth proportional to 14,913.18, 20,580.21 and 8,198.92 is: 11,314.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,913.18 : 20,580.21 = 8,198.92 : x
  2. Step 2: Convert to fraction form
    14,913.18/20,580.21 = 8,198.92/x
  3. Step 3: Cross multiply
    14,913.18x = 20,580.21 × 8,198.92
  4. Step 4: Simplify right side
    14,913.18x = 168,735,521.10
  5. Step 5: Solve for x
    x = 168,735,521.10/14,913.18
  6. Step 6: Final answer
    x = 11,314.52

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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.