Home / 20,247.06-27,939.60-11,171.88

Finding the Fourth Proportional to 20,247.06, 27,939.60 and 11,171.88

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Solution

The fourth proportional to 20,247.06, 27,939.60 and 11,171.88 is: 15,416.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,247.06 : 27,939.60 = 11,171.88 : x
  2. Step 2: Convert to fraction form
    20,247.06/27,939.60 = 11,171.88/x
  3. Step 3: Cross multiply
    20,247.06x = 27,939.60 × 11,171.88
  4. Step 4: Simplify right side
    20,247.06x = 312,137,858.45
  5. Step 5: Solve for x
    x = 312,137,858.45/20,247.06
  6. Step 6: Final answer
    x = 15,416.45

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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.