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Finding the Fourth Proportional to 20,212.22, 27,893.73 and 11,259.73

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Solution

The fourth proportional to 20,212.22, 27,893.73 and 11,259.73 is: 15,538.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212.22 : 27,893.73 = 11,259.73 : x
  2. Step 2: Convert to fraction form
    20,212.22/27,893.73 = 11,259.73/x
  3. Step 3: Cross multiply
    20,212.22x = 27,893.73 × 11,259.73
  4. Step 4: Simplify right side
    20,212.22x = 314,075,903.36
  5. Step 5: Solve for x
    x = 314,075,903.36/20,212.22
  6. Step 6: Final answer
    x = 15,538.91

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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.