Home / 20,961.06-28,926.82-11,529.88

Finding the Fourth Proportional to 20,961.06, 28,926.82 and 11,529.88

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Solution

The fourth proportional to 20,961.06, 28,926.82 and 11,529.88 is: 15,911.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.06 : 28,926.82 = 11,529.88 : x
  2. Step 2: Convert to fraction form
    20,961.06/28,926.82 = 11,529.88/x
  3. Step 3: Cross multiply
    20,961.06x = 28,926.82 × 11,529.88
  4. Step 4: Simplify right side
    20,961.06x = 333,522,763.38
  5. Step 5: Solve for x
    x = 333,522,763.38/20,961.06
  6. Step 6: Final answer
    x = 15,911.54

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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.