Home / 20,208.35-27,886.77-11,255.66

Finding the Fourth Proportional to 20,208.35, 27,886.77 and 11,255.66

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Solution

The fourth proportional to 20,208.35, 27,886.77 and 11,255.66 is: 15,532.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.35 : 27,886.77 = 11,255.66 : x
  2. Step 2: Convert to fraction form
    20,208.35/27,886.77 = 11,255.66/x
  3. Step 3: Cross multiply
    20,208.35x = 27,886.77 × 11,255.66
  4. Step 4: Simplify right side
    20,208.35x = 313,884,001.62
  5. Step 5: Solve for x
    x = 313,884,001.62/20,208.35
  6. Step 6: Final answer
    x = 15,532.39

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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.