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Finding the Fourth Proportional to 28,200.92, 38,917.26 and 16,870.89

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Solution

The fourth proportional to 28,200.92, 38,917.26 and 16,870.89 is: 23,281.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,200.92 : 38,917.26 = 16,870.89 : x
  2. Step 2: Convert to fraction form
    28,200.92/38,917.26 = 16,870.89/x
  3. Step 3: Cross multiply
    28,200.92x = 38,917.26 × 16,870.89
  4. Step 4: Simplify right side
    28,200.92x = 656,568,812.56
  5. Step 5: Solve for x
    x = 656,568,812.56/28,200.92
  6. Step 6: Final answer
    x = 23,281.83

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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.