Home / 11,965.78-17,948.61-5,040.28

Finding the Fourth Proportional to 11,965.78, 17,948.61 and 5,040.28

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Solution

The fourth proportional to 11,965.78, 17,948.61 and 5,040.28 is: 7,560.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,965.78 : 17,948.61 = 5,040.28 : x
  2. Step 2: Convert to fraction form
    11,965.78/17,948.61 = 5,040.28/x
  3. Step 3: Cross multiply
    11,965.78x = 17,948.61 × 5,040.28
  4. Step 4: Simplify right side
    11,965.78x = 90,466,020.01
  5. Step 5: Solve for x
    x = 90,466,020.01/11,965.78
  6. Step 6: Final answer
    x = 7,560.39

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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.