Home / 14,371.44-21,512.60-7,781.28

Finding the Fourth Proportional to 14,371.44, 21,512.60 and 7,781.28

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Solution

The fourth proportional to 14,371.44, 21,512.60 and 7,781.28 is: 11,647.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,371.44 : 21,512.60 = 7,781.28 : x
  2. Step 2: Convert to fraction form
    14,371.44/21,512.60 = 7,781.28/x
  3. Step 3: Cross multiply
    14,371.44x = 21,512.60 × 7,781.28
  4. Step 4: Simplify right side
    14,371.44x = 167,395,564.13
  5. Step 5: Solve for x
    x = 167,395,564.13/14,371.44
  6. Step 6: Final answer
    x = 11,647.79

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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.