Home / 20,913.96-28,859.48-11,960.03

Finding the Fourth Proportional to 20,913.96, 28,859.48 and 11,960.03

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Solution

The fourth proportional to 20,913.96, 28,859.48 and 11,960.03 is: 16,503.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913.96 : 28,859.48 = 11,960.03 : x
  2. Step 2: Convert to fraction form
    20,913.96/28,859.48 = 11,960.03/x
  3. Step 3: Cross multiply
    20,913.96x = 28,859.48 × 11,960.03
  4. Step 4: Simplify right side
    20,913.96x = 345,160,042.49
  5. Step 5: Solve for x
    x = 345,160,042.49/20,913.96
  6. Step 6: Final answer
    x = 16,503.81

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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.