Home / 20,208.48-27,888.84-11,255.64

Finding the Fourth Proportional to 20,208.48, 27,888.84 and 11,255.64

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Solution

The fourth proportional to 20,208.48, 27,888.84 and 11,255.64 is: 15,533.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.48 : 27,888.84 = 11,255.64 : x
  2. Step 2: Convert to fraction form
    20,208.48/27,888.84 = 11,255.64/x
  3. Step 3: Cross multiply
    20,208.48x = 27,888.84 × 11,255.64
  4. Step 4: Simplify right side
    20,208.48x = 313,906,743.06
  5. Step 5: Solve for x
    x = 313,906,743.06/20,208.48
  6. Step 6: Final answer
    x = 15,533.42

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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.