Home / 20,905.36-28,786.26-18,067.48

Finding the Fourth Proportional to 20,905.36, 28,786.26 and 18,067.48

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Solution

The fourth proportional to 20,905.36, 28,786.26 and 18,067.48 is: 24,878.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,905.36 : 28,786.26 = 18,067.48 : x
  2. Step 2: Convert to fraction form
    20,905.36/28,786.26 = 18,067.48/x
  3. Step 3: Cross multiply
    20,905.36x = 28,786.26 × 18,067.48
  4. Step 4: Simplify right side
    20,905.36x = 520,095,176.82
  5. Step 5: Solve for x
    x = 520,095,176.82/20,905.36
  6. Step 6: Final answer
    x = 24,878.56

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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.