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Finding the Fourth Proportional to 38,484.56, 57,679.67 and 21,858.57

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Solution

The fourth proportional to 38,484.56, 57,679.67 and 21,858.57 is: 32,761.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,484.56 : 57,679.67 = 21,858.57 : x
  2. Step 2: Convert to fraction form
    38,484.56/57,679.67 = 21,858.57/x
  3. Step 3: Cross multiply
    38,484.56x = 57,679.67 × 21,858.57
  4. Step 4: Simplify right side
    38,484.56x = 1,260,795,104.27
  5. Step 5: Solve for x
    x = 1,260,795,104.27/38,484.56
  6. Step 6: Final answer
    x = 32,761.06

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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.