Home / 20,304.12-28,019.79-11,811.27

Finding the Fourth Proportional to 20,304.12, 28,019.79 and 11,811.27

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Solution

The fourth proportional to 20,304.12, 28,019.79 and 11,811.27 is: 16,299.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,304.12 : 28,019.79 = 11,811.27 : x
  2. Step 2: Convert to fraction form
    20,304.12/28,019.79 = 11,811.27/x
  3. Step 3: Cross multiply
    20,304.12x = 28,019.79 × 11,811.27
  4. Step 4: Simplify right side
    20,304.12x = 330,949,305.03
  5. Step 5: Solve for x
    x = 330,949,305.03/20,304.12
  6. Step 6: Final answer
    x = 16,299.61

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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.