Home / 20,135.42-27,785.26-11,638.09

Finding the Fourth Proportional to 20,135.42, 27,785.26 and 11,638.09

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Solution

The fourth proportional to 20,135.42, 27,785.26 and 11,638.09 is: 16,059.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.42 : 27,785.26 = 11,638.09 : x
  2. Step 2: Convert to fraction form
    20,135.42/27,785.26 = 11,638.09/x
  3. Step 3: Cross multiply
    20,135.42x = 27,785.26 × 11,638.09
  4. Step 4: Simplify right side
    20,135.42x = 323,367,409.83
  5. Step 5: Solve for x
    x = 323,367,409.83/20,135.42
  6. Step 6: Final answer
    x = 16,059.63

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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.