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Finding the Fourth Proportional to 13,706.29, 20,559.43 and 4,939.15

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Solution

The fourth proportional to 13,706.29, 20,559.43 and 4,939.15 is: 7,408.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,706.29 : 20,559.43 = 4,939.15 : x
  2. Step 2: Convert to fraction form
    13,706.29/20,559.43 = 4,939.15/x
  3. Step 3: Cross multiply
    13,706.29x = 20,559.43 × 4,939.15
  4. Step 4: Simplify right side
    13,706.29x = 101,546,108.68
  5. Step 5: Solve for x
    x = 101,546,108.68/13,706.29
  6. Step 6: Final answer
    x = 7,408.72

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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.