Home / 30,128.34-41,591.58-21,183.54

Finding the Fourth Proportional to 30,128.34, 41,591.58 and 21,183.54

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Solution

The fourth proportional to 30,128.34, 41,591.58 and 21,183.54 is: 29,243.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,128.34 : 41,591.58 = 21,183.54 : x
  2. Step 2: Convert to fraction form
    30,128.34/41,591.58 = 21,183.54/x
  3. Step 3: Cross multiply
    30,128.34x = 41,591.58 × 21,183.54
  4. Step 4: Simplify right side
    30,128.34x = 881,056,898.59
  5. Step 5: Solve for x
    x = 881,056,898.59/30,128.34
  6. Step 6: Final answer
    x = 29,243.46

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Half scale
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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.