Home / 28,911.96-39,884.22-19,968.60

Finding the Fourth Proportional to 28,911.96, 39,884.22 and 19,968.60

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Solution

The fourth proportional to 28,911.96, 39,884.22 and 19,968.60 is: 27,546.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,911.96 : 39,884.22 = 19,968.60 : x
  2. Step 2: Convert to fraction form
    28,911.96/39,884.22 = 19,968.60/x
  3. Step 3: Cross multiply
    28,911.96x = 39,884.22 × 19,968.60
  4. Step 4: Simplify right side
    28,911.96x = 796,432,035.49
  5. Step 5: Solve for x
    x = 796,432,035.49/28,911.96
  6. Step 6: Final answer
    x = 27,546.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.