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Finding the Fourth Proportional to 18,796.28, 28,206.57 and 8,946.68

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Solution

The fourth proportional to 18,796.28, 28,206.57 and 8,946.68 is: 13,425.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,796.28 : 28,206.57 = 8,946.68 : x
  2. Step 2: Convert to fraction form
    18,796.28/28,206.57 = 8,946.68/x
  3. Step 3: Cross multiply
    18,796.28x = 28,206.57 × 8,946.68
  4. Step 4: Simplify right side
    18,796.28x = 252,355,155.69
  5. Step 5: Solve for x
    x = 252,355,155.69/18,796.28
  6. Step 6: Final answer
    x = 13,425.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.