Home / 13,845.56-20,755.98-5,078.43

Finding the Fourth Proportional to 13,845.56, 20,755.98 and 5,078.43

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Solution

The fourth proportional to 13,845.56, 20,755.98 and 5,078.43 is: 7,613.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,845.56 : 20,755.98 = 5,078.43 : x
  2. Step 2: Convert to fraction form
    13,845.56/20,755.98 = 5,078.43/x
  3. Step 3: Cross multiply
    13,845.56x = 20,755.98 × 5,078.43
  4. Step 4: Simplify right side
    13,845.56x = 105,407,791.51
  5. Step 5: Solve for x
    x = 105,407,791.51/13,845.56
  6. Step 6: Final answer
    x = 7,613.11

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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.