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Finding the Fourth Proportional to 18,741.27, 28,111.89 and 6,258.96

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Solution

The fourth proportional to 18,741.27, 28,111.89 and 6,258.96 is: 9,388.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,741.27 : 28,111.89 = 6,258.96 : x
  2. Step 2: Convert to fraction form
    18,741.27/28,111.89 = 6,258.96/x
  3. Step 3: Cross multiply
    18,741.27x = 28,111.89 × 6,258.96
  4. Step 4: Simplify right side
    18,741.27x = 175,951,195.03
  5. Step 5: Solve for x
    x = 175,951,195.03/18,741.27
  6. Step 6: Final answer
    x = 9,388.43

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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.