Home / 13,751.82-18,943.50-11,728.62

Finding the Fourth Proportional to 13,751.82, 18,943.50 and 11,728.62

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Solution

The fourth proportional to 13,751.82, 18,943.50 and 11,728.62 is: 16,156.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,751.82 : 18,943.50 = 11,728.62 : x
  2. Step 2: Convert to fraction form
    13,751.82/18,943.50 = 11,728.62/x
  3. Step 3: Cross multiply
    13,751.82x = 18,943.50 × 11,728.62
  4. Step 4: Simplify right side
    13,751.82x = 222,181,112.97
  5. Step 5: Solve for x
    x = 222,181,112.97/13,751.82
  6. Step 6: Final answer
    x = 16,156.49

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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.