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Finding the Fourth Proportional to 21,994.20, 33,015.60 and 17,085.60

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Solution

The fourth proportional to 21,994.20, 33,015.60 and 17,085.60 is: 25,647.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,994.20 : 33,015.60 = 17,085.60 : x
  2. Step 2: Convert to fraction form
    21,994.20/33,015.60 = 17,085.60/x
  3. Step 3: Cross multiply
    21,994.20x = 33,015.60 × 17,085.60
  4. Step 4: Simplify right side
    21,994.20x = 564,091,335.36
  5. Step 5: Solve for x
    x = 564,091,335.36/21,994.20
  6. Step 6: Final answer
    x = 25,647.28

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1.5x scale

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.