Home / 20,900.82-31,332.78-15,992.37

Finding the Fourth Proportional to 20,900.82, 31,332.78 and 15,992.37

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Solution

The fourth proportional to 20,900.82, 31,332.78 and 15,992.37 is: 23,974.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900.82 : 31,332.78 = 15,992.37 : x
  2. Step 2: Convert to fraction form
    20,900.82/31,332.78 = 15,992.37/x
  3. Step 3: Cross multiply
    20,900.82x = 31,332.78 × 15,992.37
  4. Step 4: Simplify right side
    20,900.82x = 501,085,330.93
  5. Step 5: Solve for x
    x = 501,085,330.93/20,900.82
  6. Step 6: Final answer
    x = 23,974.43

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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.