Home / 20,597.67-28,425.45-11,399.33

Finding the Fourth Proportional to 20,597.67, 28,425.45 and 11,399.33

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Solution

The fourth proportional to 20,597.67, 28,425.45 and 11,399.33 is: 15,731.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,597.67 : 28,425.45 = 11,399.33 : x
  2. Step 2: Convert to fraction form
    20,597.67/28,425.45 = 11,399.33/x
  3. Step 3: Cross multiply
    20,597.67x = 28,425.45 × 11,399.33
  4. Step 4: Simplify right side
    20,597.67x = 324,030,942.82
  5. Step 5: Solve for x
    x = 324,030,942.82/20,597.67
  6. Step 6: Final answer
    x = 15,731.44

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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.