Home / 13,770.22-20,656.10-3,908.72

Finding the Fourth Proportional to 13,770.22, 20,656.10 and 3,908.72

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Solution

The fourth proportional to 13,770.22, 20,656.10 and 3,908.72 is: 5,863.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,770.22 : 20,656.10 = 3,908.72 : x
  2. Step 2: Convert to fraction form
    13,770.22/20,656.10 = 3,908.72/x
  3. Step 3: Cross multiply
    13,770.22x = 20,656.10 × 3,908.72
  4. Step 4: Simplify right side
    13,770.22x = 80,738,911.19
  5. Step 5: Solve for x
    x = 80,738,911.19/13,770.22
  6. Step 6: Final answer
    x = 5,863.30

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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.