Home / 20,500.83-28,293.84-11,550.09

Finding the Fourth Proportional to 20,500.83, 28,293.84 and 11,550.09

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Solution

The fourth proportional to 20,500.83, 28,293.84 and 11,550.09 is: 15,940.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500.83 : 28,293.84 = 11,550.09 : x
  2. Step 2: Convert to fraction form
    20,500.83/28,293.84 = 11,550.09/x
  3. Step 3: Cross multiply
    20,500.83x = 28,293.84 × 11,550.09
  4. Step 4: Simplify right side
    20,500.83x = 326,796,398.45
  5. Step 5: Solve for x
    x = 326,796,398.45/20,500.83
  6. Step 6: Final answer
    x = 15,940.64

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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.