Home / 20,134.21-27,785.26-11,181.72

Finding the Fourth Proportional to 20,134.21, 27,785.26 and 11,181.72

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Solution

The fourth proportional to 20,134.21, 27,785.26 and 11,181.72 is: 15,430.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.21 : 27,785.26 = 11,181.72 : x
  2. Step 2: Convert to fraction form
    20,134.21/27,785.26 = 11,181.72/x
  3. Step 3: Cross multiply
    20,134.21x = 27,785.26 × 11,181.72
  4. Step 4: Simplify right side
    20,134.21x = 310,686,997.45
  5. Step 5: Solve for x
    x = 310,686,997.45/20,134.21
  6. Step 6: Final answer
    x = 15,430.80

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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.