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Finding the Fourth Proportional to 13,446.56, 20,173.08 and 7,904.54

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Solution

The fourth proportional to 13,446.56, 20,173.08 and 7,904.54 is: 11,858.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,446.56 : 20,173.08 = 7,904.54 : x
  2. Step 2: Convert to fraction form
    13,446.56/20,173.08 = 7,904.54/x
  3. Step 3: Cross multiply
    13,446.56x = 20,173.08 × 7,904.54
  4. Step 4: Simplify right side
    13,446.56x = 159,458,816.92
  5. Step 5: Solve for x
    x = 159,458,816.92/13,446.56
  6. Step 6: Final answer
    x = 11,858.71

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1.5x scale

Why These Related Problems?

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