Home / 20,161.80-27,822.77-11,209.24

Finding the Fourth Proportional to 20,161.80, 27,822.77 and 11,209.24

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Solution

The fourth proportional to 20,161.80, 27,822.77 and 11,209.24 is: 15,468.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.80 : 27,822.77 = 11,209.24 : x
  2. Step 2: Convert to fraction form
    20,161.80/27,822.77 = 11,209.24/x
  3. Step 3: Cross multiply
    20,161.80x = 27,822.77 × 11,209.24
  4. Step 4: Simplify right side
    20,161.80x = 311,872,106.39
  5. Step 5: Solve for x
    x = 311,872,106.39/20,161.80
  6. Step 6: Final answer
    x = 15,468.47

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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.