Home / 21,316.76-31,976.94-5,735.24

Finding the Fourth Proportional to 21,316.76, 31,976.94 and 5,735.24

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Solution

The fourth proportional to 21,316.76, 31,976.94 and 5,735.24 is: 8,603.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.76 : 31,976.94 = 5,735.24 : x
  2. Step 2: Convert to fraction form
    21,316.76/31,976.94 = 5,735.24/x
  3. Step 3: Cross multiply
    21,316.76x = 31,976.94 × 5,735.24
  4. Step 4: Simplify right side
    21,316.76x = 183,395,425.37
  5. Step 5: Solve for x
    x = 183,395,425.37/21,316.76
  6. Step 6: Final answer
    x = 8,603.34

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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.