Home / 13,755.46-18,982.86-8,447.26

Finding the Fourth Proportional to 13,755.46, 18,982.86 and 8,447.26

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Solution

The fourth proportional to 13,755.46, 18,982.86 and 8,447.26 is: 11,657.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.46 : 18,982.86 = 8,447.26 : x
  2. Step 2: Convert to fraction form
    13,755.46/18,982.86 = 8,447.26/x
  3. Step 3: Cross multiply
    13,755.46x = 18,982.86 × 8,447.26
  4. Step 4: Simplify right side
    13,755.46x = 160,353,153.96
  5. Step 5: Solve for x
    x = 160,353,153.96/13,755.46
  6. Step 6: Final answer
    x = 11,657.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.