Home / 13,961.82-20,912.67-6,555.18

Finding the Fourth Proportional to 13,961.82, 20,912.67 and 6,555.18

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Solution

The fourth proportional to 13,961.82, 20,912.67 and 6,555.18 is: 9,818.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,961.82 : 20,912.67 = 6,555.18 : x
  2. Step 2: Convert to fraction form
    13,961.82/20,912.67 = 6,555.18/x
  3. Step 3: Cross multiply
    13,961.82x = 20,912.67 × 6,555.18
  4. Step 4: Simplify right side
    13,961.82x = 137,086,316.13
  5. Step 5: Solve for x
    x = 137,086,316.13/13,961.82
  6. Step 6: Final answer
    x = 9,818.66

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1.5x scale

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.