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Finding the Fourth Proportional to 26,493.20, 39,725.40 and 10,912.40

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Solution

The fourth proportional to 26,493.20, 39,725.40 and 10,912.40 is: 16,362.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,493.20 : 39,725.40 = 10,912.40 : x
  2. Step 2: Convert to fraction form
    26,493.20/39,725.40 = 10,912.40/x
  3. Step 3: Cross multiply
    26,493.20x = 39,725.40 × 10,912.40
  4. Step 4: Simplify right side
    26,493.20x = 433,499,454.96
  5. Step 5: Solve for x
    x = 433,499,454.96/26,493.20
  6. Step 6: Final answer
    x = 16,362.67

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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.