Home / 20,326.68-30,474.36-9,791.28

Finding the Fourth Proportional to 20,326.68, 30,474.36 and 9,791.28

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Solution

The fourth proportional to 20,326.68, 30,474.36 and 9,791.28 is: 14,679.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,326.68 : 30,474.36 = 9,791.28 : x
  2. Step 2: Convert to fraction form
    20,326.68/30,474.36 = 9,791.28/x
  3. Step 3: Cross multiply
    20,326.68x = 30,474.36 × 9,791.28
  4. Step 4: Simplify right side
    20,326.68x = 298,382,991.58
  5. Step 5: Solve for x
    x = 298,382,991.58/20,326.68
  6. Step 6: Final answer
    x = 14,679.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.