Home / 13,884.32-20,820.26-6,490.96

Finding the Fourth Proportional to 13,884.32, 20,820.26 and 6,490.96

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Solution

The fourth proportional to 13,884.32, 20,820.26 and 6,490.96 is: 9,733.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,884.32 : 20,820.26 = 6,490.96 : x
  2. Step 2: Convert to fraction form
    13,884.32/20,820.26 = 6,490.96/x
  3. Step 3: Cross multiply
    13,884.32x = 20,820.26 × 6,490.96
  4. Step 4: Simplify right side
    13,884.32x = 135,143,474.85
  5. Step 5: Solve for x
    x = 135,143,474.85/13,884.32
  6. Step 6: Final answer
    x = 9,733.53

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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.