Home / 20,671.20-28,523.88-11,716.92

Finding the Fourth Proportional to 20,671.20, 28,523.88 and 11,716.92

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Solution

The fourth proportional to 20,671.20, 28,523.88 and 11,716.92 is: 16,168.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.20 : 28,523.88 = 11,716.92 : x
  2. Step 2: Convert to fraction form
    20,671.20/28,523.88 = 11,716.92/x
  3. Step 3: Cross multiply
    20,671.20x = 28,523.88 × 11,716.92
  4. Step 4: Simplify right side
    20,671.20x = 334,212,020.05
  5. Step 5: Solve for x
    x = 334,212,020.05/20,671.20
  6. Step 6: Final answer
    x = 16,168.00

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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.