Home / 12,647.07-18,971.82-5,251.37

Finding the Fourth Proportional to 12,647.07, 18,971.82 and 5,251.37

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Solution

The fourth proportional to 12,647.07, 18,971.82 and 5,251.37 is: 7,877.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,647.07 : 18,971.82 = 5,251.37 : x
  2. Step 2: Convert to fraction form
    12,647.07/18,971.82 = 5,251.37/x
  3. Step 3: Cross multiply
    12,647.07x = 18,971.82 × 5,251.37
  4. Step 4: Simplify right side
    12,647.07x = 99,627,951.53
  5. Step 5: Solve for x
    x = 99,627,951.53/12,647.07
  6. Step 6: Final answer
    x = 7,877.55

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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.