Home / 20,661.94-28,512.54-11,708.92

Finding the Fourth Proportional to 20,661.94, 28,512.54 and 11,708.92

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Solution

The fourth proportional to 20,661.94, 28,512.54 and 11,708.92 is: 16,157.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661.94 : 28,512.54 = 11,708.92 : x
  2. Step 2: Convert to fraction form
    20,661.94/28,512.54 = 11,708.92/x
  3. Step 3: Cross multiply
    20,661.94x = 28,512.54 × 11,708.92
  4. Step 4: Simplify right side
    20,661.94x = 333,851,049.86
  5. Step 5: Solve for x
    x = 333,851,049.86/20,661.94
  6. Step 6: Final answer
    x = 16,157.78

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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.