Home / 20,209.55-27,889.22-11,713.33

Finding the Fourth Proportional to 20,209.55, 27,889.22 and 11,713.33

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Solution

The fourth proportional to 20,209.55, 27,889.22 and 11,713.33 is: 16,164.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.55 : 27,889.22 = 11,713.33 : x
  2. Step 2: Convert to fraction form
    20,209.55/27,889.22 = 11,713.33/x
  3. Step 3: Cross multiply
    20,209.55x = 27,889.22 × 11,713.33
  4. Step 4: Simplify right side
    20,209.55x = 326,675,596.86
  5. Step 5: Solve for x
    x = 326,675,596.86/20,209.55
  6. Step 6: Final answer
    x = 16,164.42

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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.