Home / 30,724.44-42,405.82-19,954.28

Finding the Fourth Proportional to 30,724.44, 42,405.82 and 19,954.28

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Solution

The fourth proportional to 30,724.44, 42,405.82 and 19,954.28 is: 27,540.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,724.44 : 42,405.82 = 19,954.28 : x
  2. Step 2: Convert to fraction form
    30,724.44/42,405.82 = 19,954.28/x
  3. Step 3: Cross multiply
    30,724.44x = 42,405.82 × 19,954.28
  4. Step 4: Simplify right side
    30,724.44x = 846,177,605.91
  5. Step 5: Solve for x
    x = 846,177,605.91/30,724.44
  6. Step 6: Final answer
    x = 27,540.86

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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.