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Finding the Fourth Proportional to 14,633.96, 20,194.81 and 7,919.57

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Solution

The fourth proportional to 14,633.96, 20,194.81 and 7,919.57 is: 10,928.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,633.96 : 20,194.81 = 7,919.57 : x
  2. Step 2: Convert to fraction form
    14,633.96/20,194.81 = 7,919.57/x
  3. Step 3: Cross multiply
    14,633.96x = 20,194.81 × 7,919.57
  4. Step 4: Simplify right side
    14,633.96x = 159,934,242.12
  5. Step 5: Solve for x
    x = 159,934,242.12/14,633.96
  6. Step 6: Final answer
    x = 10,928.98

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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.