Home / 13,130.79-19,696.18-3,896.79

Finding the Fourth Proportional to 13,130.79, 19,696.18 and 3,896.79

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Solution

The fourth proportional to 13,130.79, 19,696.18 and 3,896.79 is: 5,845.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.79 : 19,696.18 = 3,896.79 : x
  2. Step 2: Convert to fraction form
    13,130.79/19,696.18 = 3,896.79/x
  3. Step 3: Cross multiply
    13,130.79x = 19,696.18 × 3,896.79
  4. Step 4: Simplify right side
    13,130.79x = 76,751,857.78
  5. Step 5: Solve for x
    x = 76,751,857.78/13,130.79
  6. Step 6: Final answer
    x = 5,845.18

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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.