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Finding the Fourth Proportional to 11,958.56, 17,937.23 and 3,638.40

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Solution

The fourth proportional to 11,958.56, 17,937.23 and 3,638.40 is: 5,457.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,958.56 : 17,937.23 = 3,638.40 : x
  2. Step 2: Convert to fraction form
    11,958.56/17,937.23 = 3,638.40/x
  3. Step 3: Cross multiply
    11,958.56x = 17,937.23 × 3,638.40
  4. Step 4: Simplify right side
    11,958.56x = 65,262,732.18
  5. Step 5: Solve for x
    x = 65,262,732.18/11,958.56
  6. Step 6: Final answer
    x = 5,457.41

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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.