Home / 20,825.56-28,739.88-11,394.64

Finding the Fourth Proportional to 20,825.56, 28,739.88 and 11,394.64

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Solution

The fourth proportional to 20,825.56, 28,739.88 and 11,394.64 is: 15,724.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,825.56 : 28,739.88 = 11,394.64 : x
  2. Step 2: Convert to fraction form
    20,825.56/28,739.88 = 11,394.64/x
  3. Step 3: Cross multiply
    20,825.56x = 28,739.88 × 11,394.64
  4. Step 4: Simplify right side
    20,825.56x = 327,480,586.24
  5. Step 5: Solve for x
    x = 327,480,586.24/20,825.56
  6. Step 6: Final answer
    x = 15,724.94

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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.