Home / 20,102.86-27,742.32-11,027.64

Finding the Fourth Proportional to 20,102.86, 27,742.32 and 11,027.64

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Solution

The fourth proportional to 20,102.86, 27,742.32 and 11,027.64 is: 15,218.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.86 : 27,742.32 = 11,027.64 : x
  2. Step 2: Convert to fraction form
    20,102.86/27,742.32 = 11,027.64/x
  3. Step 3: Cross multiply
    20,102.86x = 27,742.32 × 11,027.64
  4. Step 4: Simplify right side
    20,102.86x = 305,932,317.72
  5. Step 5: Solve for x
    x = 305,932,317.72/20,102.86
  6. Step 6: Final answer
    x = 15,218.35

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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.