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Finding the Fourth Proportional to 18,853.64, 28,268.83 and 6,372.48

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Solution

The fourth proportional to 18,853.64, 28,268.83 and 6,372.48 is: 9,554.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,853.64 : 28,268.83 = 6,372.48 : x
  2. Step 2: Convert to fraction form
    18,853.64/28,268.83 = 6,372.48/x
  3. Step 3: Cross multiply
    18,853.64x = 28,268.83 × 6,372.48
  4. Step 4: Simplify right side
    18,853.64x = 180,142,553.80
  5. Step 5: Solve for x
    x = 180,142,553.80/18,853.64
  6. Step 6: Final answer
    x = 9,554.79

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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.