Home / 13,112.26-19,673.86-7,857.38

Finding the Fourth Proportional to 13,112.26, 19,673.86 and 7,857.38

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Solution

The fourth proportional to 13,112.26, 19,673.86 and 7,857.38 is: 11,789.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.26 : 19,673.86 = 7,857.38 : x
  2. Step 2: Convert to fraction form
    13,112.26/19,673.86 = 7,857.38/x
  3. Step 3: Cross multiply
    13,112.26x = 19,673.86 × 7,857.38
  4. Step 4: Simplify right side
    13,112.26x = 154,584,994.09
  5. Step 5: Solve for x
    x = 154,584,994.09/13,112.26
  6. Step 6: Final answer
    x = 11,789.35

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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.