Home / 20,634.32-28,474.92-11,202.80

Finding the Fourth Proportional to 20,634.32, 28,474.92 and 11,202.80

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Solution

The fourth proportional to 20,634.32, 28,474.92 and 11,202.80 is: 15,459.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634.32 : 28,474.92 = 11,202.80 : x
  2. Step 2: Convert to fraction form
    20,634.32/28,474.92 = 11,202.80/x
  3. Step 3: Cross multiply
    20,634.32x = 28,474.92 × 11,202.80
  4. Step 4: Simplify right side
    20,634.32x = 318,998,833.78
  5. Step 5: Solve for x
    x = 318,998,833.78/20,634.32
  6. Step 6: Final answer
    x = 15,459.62

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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.