Home / 38,120.12-52,605.78-21,353.12

Finding the Fourth Proportional to 38,120.12, 52,605.78 and 21,353.12

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Solution

The fourth proportional to 38,120.12, 52,605.78 and 21,353.12 is: 29,467.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,120.12 : 52,605.78 = 21,353.12 : x
  2. Step 2: Convert to fraction form
    38,120.12/52,605.78 = 21,353.12/x
  3. Step 3: Cross multiply
    38,120.12x = 52,605.78 × 21,353.12
  4. Step 4: Simplify right side
    38,120.12x = 1,123,297,533.03
  5. Step 5: Solve for x
    x = 1,123,297,533.03/38,120.12
  6. Step 6: Final answer
    x = 29,467.31

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Half scale
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Double scale
Find fourth proportional to 38,121.12, 52,607.16 and 21,354.12
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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.