Home / 20,120.00-27,765.17-11,166.96

Finding the Fourth Proportional to 20,120.00, 27,765.17 and 11,166.96

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Solution

The fourth proportional to 20,120.00, 27,765.17 and 11,166.96 is: 15,410.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.00 : 27,765.17 = 11,166.96 : x
  2. Step 2: Convert to fraction form
    20,120.00/27,765.17 = 11,166.96/x
  3. Step 3: Cross multiply
    20,120.00x = 27,765.17 × 11,166.96
  4. Step 4: Simplify right side
    20,120.00x = 310,052,486.95
  5. Step 5: Solve for x
    x = 310,052,486.95/20,120.00
  6. Step 6: Final answer
    x = 15,410.17

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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.