Home / 20,687.39-30,797.09-20,564.37

Finding the Fourth Proportional to 20,687.39, 30,797.09 and 20,564.37

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Solution

The fourth proportional to 20,687.39, 30,797.09 and 20,564.37 is: 30,613.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.39 : 30,797.09 = 20,564.37 : x
  2. Step 2: Convert to fraction form
    20,687.39/30,797.09 = 20,564.37/x
  3. Step 3: Cross multiply
    20,687.39x = 30,797.09 × 20,564.37
  4. Step 4: Simplify right side
    20,687.39x = 633,322,753.68
  5. Step 5: Solve for x
    x = 633,322,753.68/20,687.39
  6. Step 6: Final answer
    x = 30,613.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.