Home / 20,208.58-27,887.80-11,256.86

Finding the Fourth Proportional to 20,208.58, 27,887.80 and 11,256.86

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Solution

The fourth proportional to 20,208.58, 27,887.80 and 11,256.86 is: 15,534.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.58 : 27,887.80 = 11,256.86 : x
  2. Step 2: Convert to fraction form
    20,208.58/27,887.80 = 11,256.86/x
  3. Step 3: Cross multiply
    20,208.58x = 27,887.80 × 11,256.86
  4. Step 4: Simplify right side
    20,208.58x = 313,929,060.31
  5. Step 5: Solve for x
    x = 313,929,060.31/20,208.58
  6. Step 6: Final answer
    x = 15,534.44

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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.