Home / 21,319.90-31,976.97-5,738.46

Finding the Fourth Proportional to 21,319.90, 31,976.97 and 5,738.46

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Solution

The fourth proportional to 21,319.90, 31,976.97 and 5,738.46 is: 8,606.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,319.90 : 31,976.97 = 5,738.46 : x
  2. Step 2: Convert to fraction form
    21,319.90/31,976.97 = 5,738.46/x
  3. Step 3: Cross multiply
    21,319.90x = 31,976.97 × 5,738.46
  4. Step 4: Simplify right side
    21,319.90x = 183,498,563.27
  5. Step 5: Solve for x
    x = 183,498,563.27/21,319.90
  6. Step 6: Final answer
    x = 8,606.91

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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.