Home / 20,671.60-28,530.92-12,286.48

Finding the Fourth Proportional to 20,671.60, 28,530.92 and 12,286.48

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Solution

The fourth proportional to 20,671.60, 28,530.92 and 12,286.48 is: 16,957.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.60 : 28,530.92 = 12,286.48 : x
  2. Step 2: Convert to fraction form
    20,671.60/28,530.92 = 12,286.48/x
  3. Step 3: Cross multiply
    20,671.60x = 28,530.92 × 12,286.48
  4. Step 4: Simplify right side
    20,671.60x = 350,544,577.96
  5. Step 5: Solve for x
    x = 350,544,577.96/20,671.60
  6. Step 6: Final answer
    x = 16,957.79

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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.