Home / 13,723.44-18,936.96-7,755.20

Finding the Fourth Proportional to 13,723.44, 18,936.96 and 7,755.20

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Solution

The fourth proportional to 13,723.44, 18,936.96 and 7,755.20 is: 10,701.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.44 : 18,936.96 = 7,755.20 : x
  2. Step 2: Convert to fraction form
    13,723.44/18,936.96 = 7,755.20/x
  3. Step 3: Cross multiply
    13,723.44x = 18,936.96 × 7,755.20
  4. Step 4: Simplify right side
    13,723.44x = 146,859,912.19
  5. Step 5: Solve for x
    x = 146,859,912.19/13,723.44
  6. Step 6: Final answer
    x = 10,701.39

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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.