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Finding the Fourth Proportional to 20,055, 27,675.96 and 11,103.12

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Solution

The fourth proportional to 20,055, 27,675.96 and 11,103.12 is: 15,322.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,055 : 27,675.96 = 11,103.12 : x
  2. Step 2: Convert to fraction form
    20,055/27,675.96 = 11,103.12/x
  3. Step 3: Cross multiply
    20,055x = 27,675.96 × 11,103.12
  4. Step 4: Simplify right side
    20,055x = 307,289,505.00
  5. Step 5: Solve for x
    x = 307,289,505.00/20,055
  6. Step 6: Final answer
    x = 15,322.34

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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.