Home / 20,209.09-27,889.24-11,711.23

Finding the Fourth Proportional to 20,209.09, 27,889.24 and 11,711.23

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Solution

The fourth proportional to 20,209.09, 27,889.24 and 11,711.23 is: 16,161.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.09 : 27,889.24 = 11,711.23 : x
  2. Step 2: Convert to fraction form
    20,209.09/27,889.24 = 11,711.23/x
  3. Step 3: Cross multiply
    20,209.09x = 27,889.24 × 11,711.23
  4. Step 4: Simplify right side
    20,209.09x = 326,617,205.16
  5. Step 5: Solve for x
    x = 326,617,205.16/20,209.09
  6. Step 6: Final answer
    x = 16,161.90

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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.