Home / 20,796.76-31,194.60-5,214.52

Finding the Fourth Proportional to 20,796.76, 31,194.60 and 5,214.52

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Solution

The fourth proportional to 20,796.76, 31,194.60 and 5,214.52 is: 7,821.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796.76 : 31,194.60 = 5,214.52 : x
  2. Step 2: Convert to fraction form
    20,796.76/31,194.60 = 5,214.52/x
  3. Step 3: Cross multiply
    20,796.76x = 31,194.60 × 5,214.52
  4. Step 4: Simplify right side
    20,796.76x = 162,664,865.59
  5. Step 5: Solve for x
    x = 162,664,865.59/20,796.76
  6. Step 6: Final answer
    x = 7,821.64

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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.