Home / 20,634.28-28,474.54-11,202.64

Finding the Fourth Proportional to 20,634.28, 28,474.54 and 11,202.64

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Solution

The fourth proportional to 20,634.28, 28,474.54 and 11,202.64 is: 15,459.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634.28 : 28,474.54 = 11,202.64 : x
  2. Step 2: Convert to fraction form
    20,634.28/28,474.54 = 11,202.64/x
  3. Step 3: Cross multiply
    20,634.28x = 28,474.54 × 11,202.64
  4. Step 4: Simplify right side
    20,634.28x = 318,990,020.79
  5. Step 5: Solve for x
    x = 318,990,020.79/20,634.28
  6. Step 6: Final answer
    x = 15,459.23

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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.