Home / 20,208.25-27,888.24-11,255.75

Finding the Fourth Proportional to 20,208.25, 27,888.24 and 11,255.75

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Solution

The fourth proportional to 20,208.25, 27,888.24 and 11,255.75 is: 15,533.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.25 : 27,888.24 = 11,255.75 : x
  2. Step 2: Convert to fraction form
    20,208.25/27,888.24 = 11,255.75/x
  3. Step 3: Cross multiply
    20,208.25x = 27,888.24 × 11,255.75
  4. Step 4: Simplify right side
    20,208.25x = 313,903,127.10
  5. Step 5: Solve for x
    x = 313,903,127.10/20,208.25
  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.