Home / 20,175.67-27,840.87-11,221.73

Finding the Fourth Proportional to 20,175.67, 27,840.87 and 11,221.73

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Solution

The fourth proportional to 20,175.67, 27,840.87 and 11,221.73 is: 15,485.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,175.67 : 27,840.87 = 11,221.73 : x
  2. Step 2: Convert to fraction form
    20,175.67/27,840.87 = 11,221.73/x
  3. Step 3: Cross multiply
    20,175.67x = 27,840.87 × 11,221.73
  4. Step 4: Simplify right side
    20,175.67x = 312,422,726.11
  5. Step 5: Solve for x
    x = 312,422,726.11/20,175.67
  6. Step 6: Final answer
    x = 15,485.12

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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.