Home / 28,764.82-39,680.23-19,796.76

Finding the Fourth Proportional to 28,764.82, 39,680.23 and 19,796.76

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Solution

The fourth proportional to 28,764.82, 39,680.23 and 19,796.76 is: 27,309.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,764.82 : 39,680.23 = 19,796.76 : x
  2. Step 2: Convert to fraction form
    28,764.82/39,680.23 = 19,796.76/x
  3. Step 3: Cross multiply
    28,764.82x = 39,680.23 × 19,796.76
  4. Step 4: Simplify right side
    28,764.82x = 785,539,990.05
  5. Step 5: Solve for x
    x = 785,539,990.05/28,764.82
  6. Step 6: Final answer
    x = 27,309.05

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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.