Home / 20,000.75-27,601.04-11,168.75

Finding the Fourth Proportional to 20,000.75, 27,601.04 and 11,168.75

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Solution

The fourth proportional to 20,000.75, 27,601.04 and 11,168.75 is: 15,412.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,000.75 : 27,601.04 = 11,168.75 : x
  2. Step 2: Convert to fraction form
    20,000.75/27,601.04 = 11,168.75/x
  3. Step 3: Cross multiply
    20,000.75x = 27,601.04 × 11,168.75
  4. Step 4: Simplify right side
    20,000.75x = 308,269,115.50
  5. Step 5: Solve for x
    x = 308,269,115.50/20,000.75
  6. Step 6: Final answer
    x = 15,412.88

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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.