Home / 20,124.09-27,771.27-11,171.25

Finding the Fourth Proportional to 20,124.09, 27,771.27 and 11,171.25

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Solution

The fourth proportional to 20,124.09, 27,771.27 and 11,171.25 is: 15,416.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.09 : 27,771.27 = 11,171.25 : x
  2. Step 2: Convert to fraction form
    20,124.09/27,771.27 = 11,171.25/x
  3. Step 3: Cross multiply
    20,124.09x = 27,771.27 × 11,171.25
  4. Step 4: Simplify right side
    20,124.09x = 310,239,799.99
  5. Step 5: Solve for x
    x = 310,239,799.99/20,124.09
  6. Step 6: Final answer
    x = 15,416.34

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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.