Home / 38,611.44-53,285.94-21,615.30

Finding the Fourth Proportional to 38,611.44, 53,285.94 and 21,615.30

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Solution

The fourth proportional to 38,611.44, 53,285.94 and 21,615.30 is: 29,830.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,611.44 : 53,285.94 = 21,615.30 : x
  2. Step 2: Convert to fraction form
    38,611.44/53,285.94 = 21,615.30/x
  3. Step 3: Cross multiply
    38,611.44x = 53,285.94 × 21,615.30
  4. Step 4: Simplify right side
    38,611.44x = 1,151,791,578.88
  5. Step 5: Solve for x
    x = 1,151,791,578.88/38,611.44
  6. Step 6: Final answer
    x = 29,830.32

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Double scale
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Similar ratio
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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.