Home / 20,769.84-28,661.58-11,338.47

Finding the Fourth Proportional to 20,769.84, 28,661.58 and 11,338.47

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Solution

The fourth proportional to 20,769.84, 28,661.58 and 11,338.47 is: 15,646.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.84 : 28,661.58 = 11,338.47 : x
  2. Step 2: Convert to fraction form
    20,769.84/28,661.58 = 11,338.47/x
  3. Step 3: Cross multiply
    20,769.84x = 28,661.58 × 11,338.47
  4. Step 4: Simplify right side
    20,769.84x = 324,978,464.98
  5. Step 5: Solve for x
    x = 324,978,464.98/20,769.84
  6. Step 6: Final answer
    x = 15,646.65

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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.