Home / 21,317.82-31,976.70-5,735.44

Finding the Fourth Proportional to 21,317.82, 31,976.70 and 5,735.44

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Solution

The fourth proportional to 21,317.82, 31,976.70 and 5,735.44 is: 8,603.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.82 : 31,976.70 = 5,735.44 : x
  2. Step 2: Convert to fraction form
    21,317.82/31,976.70 = 5,735.44/x
  3. Step 3: Cross multiply
    21,317.82x = 31,976.70 × 5,735.44
  4. Step 4: Simplify right side
    21,317.82x = 183,400,444.25
  5. Step 5: Solve for x
    x = 183,400,444.25/21,317.82
  6. Step 6: Final answer
    x = 8,603.15

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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.