Home / 20,847.55-28,769.06-11,894.89

Finding the Fourth Proportional to 20,847.55, 28,769.06 and 11,894.89

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Solution

The fourth proportional to 20,847.55, 28,769.06 and 11,894.89 is: 16,414.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.55 : 28,769.06 = 11,894.89 : x
  2. Step 2: Convert to fraction form
    20,847.55/28,769.06 = 11,894.89/x
  3. Step 3: Cross multiply
    20,847.55x = 28,769.06 × 11,894.89
  4. Step 4: Simplify right side
    20,847.55x = 342,204,600.78
  5. Step 5: Solve for x
    x = 342,204,600.78/20,847.55
  6. Step 6: Final answer
    x = 16,414.62

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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.