Home / 20,245.92-27,939.24-11,171.76

Finding the Fourth Proportional to 20,245.92, 27,939.24 and 11,171.76

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Solution

The fourth proportional to 20,245.92, 27,939.24 and 11,171.76 is: 15,416.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,245.92 : 27,939.24 = 11,171.76 : x
  2. Step 2: Convert to fraction form
    20,245.92/27,939.24 = 11,171.76/x
  3. Step 3: Cross multiply
    20,245.92x = 27,939.24 × 11,171.76
  4. Step 4: Simplify right side
    20,245.92x = 312,130,483.86
  5. Step 5: Solve for x
    x = 312,130,483.86/20,245.92
  6. Step 6: Final answer
    x = 15,416.96

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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.