Home / 20,961.14-28,925.75-11,529.69

Finding the Fourth Proportional to 20,961.14, 28,925.75 and 11,529.69

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Solution

The fourth proportional to 20,961.14, 28,925.75 and 11,529.69 is: 15,910.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.14 : 28,925.75 = 11,529.69 : x
  2. Step 2: Convert to fraction form
    20,961.14/28,925.75 = 11,529.69/x
  3. Step 3: Cross multiply
    20,961.14x = 28,925.75 × 11,529.69
  4. Step 4: Simplify right side
    20,961.14x = 333,504,872.87
  5. Step 5: Solve for x
    x = 333,504,872.87/20,961.14
  6. Step 6: Final answer
    x = 15,910.63

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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.