Home / 20,960.33-28,923.97-12,005.78

Finding the Fourth Proportional to 20,960.33, 28,923.97 and 12,005.78

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Solution

The fourth proportional to 20,960.33, 28,923.97 and 12,005.78 is: 16,567.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.33 : 28,923.97 = 12,005.78 : x
  2. Step 2: Convert to fraction form
    20,960.33/28,923.97 = 12,005.78/x
  3. Step 3: Cross multiply
    20,960.33x = 28,923.97 × 12,005.78
  4. Step 4: Simplify right side
    20,960.33x = 347,254,760.52
  5. Step 5: Solve for x
    x = 347,254,760.52/20,960.33
  6. Step 6: Final answer
    x = 16,567.24

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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.