Home / 20,960.75-28,926.44-11,529.92

Finding the Fourth Proportional to 20,960.75, 28,926.44 and 11,529.92

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Solution

The fourth proportional to 20,960.75, 28,926.44 and 11,529.92 is: 15,911.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.75 : 28,926.44 = 11,529.92 : x
  2. Step 2: Convert to fraction form
    20,960.75/28,926.44 = 11,529.92/x
  3. Step 3: Cross multiply
    20,960.75x = 28,926.44 × 11,529.92
  4. Step 4: Simplify right side
    20,960.75x = 333,519,539.08
  5. Step 5: Solve for x
    x = 333,519,539.08/20,960.75
  6. Step 6: Final answer
    x = 15,911.62

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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.