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Finding the Fourth Proportional to 21,652.85, 32,485.40 and 8,331.96

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Solution

The fourth proportional to 21,652.85, 32,485.40 and 8,331.96 is: 12,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,652.85 : 32,485.40 = 8,331.96 : x
  2. Step 2: Convert to fraction form
    21,652.85/32,485.40 = 8,331.96/x
  3. Step 3: Cross multiply
    21,652.85x = 32,485.40 × 8,331.96
  4. Step 4: Simplify right side
    21,652.85x = 270,667,011.72
  5. Step 5: Solve for x
    x = 270,667,011.72/21,652.85
  6. Step 6: Final answer
    x = 12,500.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.