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Finding the Fourth Proportional to 43,489.63, 65,245.38 and 12,324.88

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Solution

The fourth proportional to 43,489.63, 65,245.38 and 12,324.88 is: 18,490.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,489.63 : 65,245.38 = 12,324.88 : x
  2. Step 2: Convert to fraction form
    43,489.63/65,245.38 = 12,324.88/x
  3. Step 3: Cross multiply
    43,489.63x = 65,245.38 × 12,324.88
  4. Step 4: Simplify right side
    43,489.63x = 804,141,091.20
  5. Step 5: Solve for x
    x = 804,141,091.20/43,489.63
  6. Step 6: Final answer
    x = 18,490.41

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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.