Home / 20,174.67-27,839.49-11,220.73

Finding the Fourth Proportional to 20,174.67, 27,839.49 and 11,220.73

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Solution

The fourth proportional to 20,174.67, 27,839.49 and 11,220.73 is: 15,483.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,174.67 : 27,839.49 = 11,220.73 : x
  2. Step 2: Convert to fraction form
    20,174.67/27,839.49 = 11,220.73/x
  3. Step 3: Cross multiply
    20,174.67x = 27,839.49 × 11,220.73
  4. Step 4: Simplify right side
    20,174.67x = 312,379,400.63
  5. Step 5: Solve for x
    x = 312,379,400.63/20,174.67
  6. Step 6: Final answer
    x = 15,483.74

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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.