Home / 20,671.20-28,524.08-12,286.56

Finding the Fourth Proportional to 20,671.20, 28,524.08 and 12,286.56

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Solution

The fourth proportional to 20,671.20, 28,524.08 and 12,286.56 is: 16,954.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.20 : 28,524.08 = 12,286.56 : x
  2. Step 2: Convert to fraction form
    20,671.20/28,524.08 = 12,286.56/x
  3. Step 3: Cross multiply
    20,671.20x = 28,524.08 × 12,286.56
  4. Step 4: Simplify right side
    20,671.20x = 350,462,820.36
  5. Step 5: Solve for x
    x = 350,462,820.36/20,671.20
  6. Step 6: Final answer
    x = 16,954.16

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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.