Home / 20,769.32-28,662.34-11,338.60

Finding the Fourth Proportional to 20,769.32, 28,662.34 and 11,338.60

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Solution

The fourth proportional to 20,769.32, 28,662.34 and 11,338.60 is: 15,647.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.32 : 28,662.34 = 11,338.60 : x
  2. Step 2: Convert to fraction form
    20,769.32/28,662.34 = 11,338.60/x
  3. Step 3: Cross multiply
    20,769.32x = 28,662.34 × 11,338.60
  4. Step 4: Simplify right side
    20,769.32x = 324,990,808.32
  5. Step 5: Solve for x
    x = 324,990,808.32/20,769.32
  6. Step 6: Final answer
    x = 15,647.64

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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.