Home / 27,998.40-38,644.32-19,627.20

Finding the Fourth Proportional to 27,998.40, 38,644.32 and 19,627.20

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Solution

The fourth proportional to 27,998.40, 38,644.32 and 19,627.20 is: 27,090.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,998.40 : 38,644.32 = 19,627.20 : x
  2. Step 2: Convert to fraction form
    27,998.40/38,644.32 = 19,627.20/x
  3. Step 3: Cross multiply
    27,998.40x = 38,644.32 × 19,627.20
  4. Step 4: Simplify right side
    27,998.40x = 758,479,797.50
  5. Step 5: Solve for x
    x = 758,479,797.50/27,998.40
  6. Step 6: Final answer
    x = 27,090.11

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Half scale
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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.