Home / 20,208.54-27,887.08-11,255.58

Finding the Fourth Proportional to 20,208.54, 27,887.08 and 11,255.58

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Solution

The fourth proportional to 20,208.54, 27,887.08 and 11,255.58 is: 15,532.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.54 : 27,887.08 = 11,255.58 : x
  2. Step 2: Convert to fraction form
    20,208.54/27,887.08 = 11,255.58/x
  3. Step 3: Cross multiply
    20,208.54x = 27,887.08 × 11,255.58
  4. Step 4: Simplify right side
    20,208.54x = 313,885,259.91
  5. Step 5: Solve for x
    x = 313,885,259.91/20,208.54
  6. Step 6: Final answer
    x = 15,532.31

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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.