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Finding the Fourth Proportional to 28,982.88, 39,971.88 and 20,016.18

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Solution

The fourth proportional to 28,982.88, 39,971.88 and 20,016.18 is: 27,605.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,982.88 : 39,971.88 = 20,016.18 : x
  2. Step 2: Convert to fraction form
    28,982.88/39,971.88 = 20,016.18/x
  3. Step 3: Cross multiply
    28,982.88x = 39,971.88 × 20,016.18
  4. Step 4: Simplify right side
    28,982.88x = 800,084,345.02
  5. Step 5: Solve for x
    x = 800,084,345.02/28,982.88
  6. Step 6: Final answer
    x = 27,605.41

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