Home / 20,825.07-28,739.27-11,393.62

Finding the Fourth Proportional to 20,825.07, 28,739.27 and 11,393.62

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Solution

The fourth proportional to 20,825.07, 28,739.27 and 11,393.62 is: 15,723.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,825.07 : 28,739.27 = 11,393.62 : x
  2. Step 2: Convert to fraction form
    20,825.07/28,739.27 = 11,393.62/x
  3. Step 3: Cross multiply
    20,825.07x = 28,739.27 × 11,393.62
  4. Step 4: Simplify right side
    20,825.07x = 327,444,321.46
  5. Step 5: Solve for x
    x = 327,444,321.46/20,825.07
  6. Step 6: Final answer
    x = 15,723.56

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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.