Home / 20,772.10-28,664.42-11,819.42

Finding the Fourth Proportional to 20,772.10, 28,664.42 and 11,819.42

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Solution

The fourth proportional to 20,772.10, 28,664.42 and 11,819.42 is: 16,310.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.10 : 28,664.42 = 11,819.42 : x
  2. Step 2: Convert to fraction form
    20,772.10/28,664.42 = 11,819.42/x
  3. Step 3: Cross multiply
    20,772.10x = 28,664.42 × 11,819.42
  4. Step 4: Simplify right side
    20,772.10x = 338,796,819.04
  5. Step 5: Solve for x
    x = 338,796,819.04/20,772.10
  6. Step 6: Final answer
    x = 16,310.19

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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.