Home / 21,961.44-30,279.60-19,118.16

Finding the Fourth Proportional to 21,961.44, 30,279.60 and 19,118.16

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Solution

The fourth proportional to 21,961.44, 30,279.60 and 19,118.16 is: 26,359.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961.44 : 30,279.60 = 19,118.16 : x
  2. Step 2: Convert to fraction form
    21,961.44/30,279.60 = 19,118.16/x
  3. Step 3: Cross multiply
    21,961.44x = 30,279.60 × 19,118.16
  4. Step 4: Simplify right side
    21,961.44x = 578,890,237.54
  5. Step 5: Solve for x
    x = 578,890,237.54/21,961.44
  6. Step 6: Final answer
    x = 26,359.39

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Double scale
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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.