Home / 18,119.98-27,178.75-4,971.25

Finding the Fourth Proportional to 18,119.98, 27,178.75 and 4,971.25

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Solution

The fourth proportional to 18,119.98, 27,178.75 and 4,971.25 is: 7,456.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,119.98 : 27,178.75 = 4,971.25 : x
  2. Step 2: Convert to fraction form
    18,119.98/27,178.75 = 4,971.25/x
  3. Step 3: Cross multiply
    18,119.98x = 27,178.75 × 4,971.25
  4. Step 4: Simplify right side
    18,119.98x = 135,112,360.94
  5. Step 5: Solve for x
    x = 135,112,360.94/18,119.98
  6. Step 6: Final answer
    x = 7,456.54

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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.