Home / 13,091.31-19,629.53-8,936.36

Finding the Fourth Proportional to 13,091.31, 19,629.53 and 8,936.36

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Solution

The fourth proportional to 13,091.31, 19,629.53 and 8,936.36 is: 13,399.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,091.31 : 19,629.53 = 8,936.36 : x
  2. Step 2: Convert to fraction form
    13,091.31/19,629.53 = 8,936.36/x
  3. Step 3: Cross multiply
    13,091.31x = 19,629.53 × 8,936.36
  4. Step 4: Simplify right side
    13,091.31x = 175,416,403.88
  5. Step 5: Solve for x
    x = 175,416,403.88/13,091.31
  6. Step 6: Final answer
    x = 13,399.45

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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.