Home / 39,828.56-54,961.52-21,923.19

Finding the Fourth Proportional to 39,828.56, 54,961.52 and 21,923.19

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Solution

The fourth proportional to 39,828.56, 54,961.52 and 21,923.19 is: 30,252.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,828.56 : 54,961.52 = 21,923.19 : x
  2. Step 2: Convert to fraction form
    39,828.56/54,961.52 = 21,923.19/x
  3. Step 3: Cross multiply
    39,828.56x = 54,961.52 × 21,923.19
  4. Step 4: Simplify right side
    39,828.56x = 1,204,931,736.03
  5. Step 5: Solve for x
    x = 1,204,931,736.03/39,828.56
  6. Step 6: Final answer
    x = 30,252.96

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Half scale
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Double scale
Find fourth proportional to 39,829.56, 54,962.89 and 21,924.19
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.