Home / 20,208.87-27,889.08-11,256.36

Finding the Fourth Proportional to 20,208.87, 27,889.08 and 11,256.36

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Solution

The fourth proportional to 20,208.87, 27,889.08 and 11,256.36 is: 15,534.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.87 : 27,889.08 = 11,256.36 : x
  2. Step 2: Convert to fraction form
    20,208.87/27,889.08 = 11,256.36/x
  3. Step 3: Cross multiply
    20,208.87x = 27,889.08 × 11,256.36
  4. Step 4: Simplify right side
    20,208.87x = 313,929,524.55
  5. Step 5: Solve for x
    x = 313,929,524.55/20,208.87
  6. Step 6: Final answer
    x = 15,534.24

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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.