Home / 20,712.72-28,593.09-12,212.04

Finding the Fourth Proportional to 20,712.72, 28,593.09 and 12,212.04

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Solution

The fourth proportional to 20,712.72, 28,593.09 and 12,212.04 is: 16,858.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.72 : 28,593.09 = 12,212.04 : x
  2. Step 2: Convert to fraction form
    20,712.72/28,593.09 = 12,212.04/x
  3. Step 3: Cross multiply
    20,712.72x = 28,593.09 × 12,212.04
  4. Step 4: Simplify right side
    20,712.72x = 349,179,958.80
  5. Step 5: Solve for x
    x = 349,179,958.80/20,712.72
  6. Step 6: Final answer
    x = 16,858.24

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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.