Home / 20,133.21-27,783.88-11,180.72

Finding the Fourth Proportional to 20,133.21, 27,783.88 and 11,180.72

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Solution

The fourth proportional to 20,133.21, 27,783.88 and 11,180.72 is: 15,429.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.21 : 27,783.88 = 11,180.72 : x
  2. Step 2: Convert to fraction form
    20,133.21/27,783.88 = 11,180.72/x
  3. Step 3: Cross multiply
    20,133.21x = 27,783.88 × 11,180.72
  4. Step 4: Simplify right side
    20,133.21x = 310,643,713.33
  5. Step 5: Solve for x
    x = 310,643,713.33/20,133.21
  6. Step 6: Final answer
    x = 15,429.42

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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.