Home / 19,620.60-29,433.78-6,469.80

Finding the Fourth Proportional to 19,620.60, 29,433.78 and 6,469.80

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Solution

The fourth proportional to 19,620.60, 29,433.78 and 6,469.80 is: 9,705.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,620.60 : 29,433.78 = 6,469.80 : x
  2. Step 2: Convert to fraction form
    19,620.60/29,433.78 = 6,469.80/x
  3. Step 3: Cross multiply
    19,620.60x = 29,433.78 × 6,469.80
  4. Step 4: Simplify right side
    19,620.60x = 190,430,669.84
  5. Step 5: Solve for x
    x = 190,430,669.84/19,620.60
  6. Step 6: Final answer
    x = 9,705.65

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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.