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Finding the Fourth Proportional to 43,682.80, 65,469.36 and 18,693.46

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Solution

The fourth proportional to 43,682.80, 65,469.36 and 18,693.46 is: 28,016.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,682.80 : 65,469.36 = 18,693.46 : x
  2. Step 2: Convert to fraction form
    43,682.80/65,469.36 = 18,693.46/x
  3. Step 3: Cross multiply
    43,682.80x = 65,469.36 × 18,693.46
  4. Step 4: Simplify right side
    43,682.80x = 1,223,848,862.39
  5. Step 5: Solve for x
    x = 1,223,848,862.39/43,682.80
  6. Step 6: Final answer
    x = 28,016.72

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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.