Home / 20,882.00-28,816.97-11,928.87

Finding the Fourth Proportional to 20,882.00, 28,816.97 and 11,928.87

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Solution

The fourth proportional to 20,882.00, 28,816.97 and 11,928.87 is: 16,461.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.00 : 28,816.97 = 11,928.87 : x
  2. Step 2: Convert to fraction form
    20,882.00/28,816.97 = 11,928.87/x
  3. Step 3: Cross multiply
    20,882.00x = 28,816.97 × 11,928.87
  4. Step 4: Simplify right side
    20,882.00x = 343,753,829.28
  5. Step 5: Solve for x
    x = 343,753,829.28/20,882.00
  6. Step 6: Final answer
    x = 16,461.73

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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.