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Finding the Fourth Proportional to 14,667.50, 20,241.18 and 8,379.86

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Solution

The fourth proportional to 14,667.50, 20,241.18 and 8,379.86 is: 11,564.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,667.50 : 20,241.18 = 8,379.86 : x
  2. Step 2: Convert to fraction form
    14,667.50/20,241.18 = 8,379.86/x
  3. Step 3: Cross multiply
    14,667.50x = 20,241.18 × 8,379.86
  4. Step 4: Simplify right side
    14,667.50x = 169,618,254.63
  5. Step 5: Solve for x
    x = 169,618,254.63/14,667.50
  6. Step 6: Final answer
    x = 11,564.22

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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.