Home / 20,401.82-28,155.46-11,902.58

Finding the Fourth Proportional to 20,401.82, 28,155.46 and 11,902.58

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Solution

The fourth proportional to 20,401.82, 28,155.46 and 11,902.58 is: 16,426.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.82 : 28,155.46 = 11,902.58 : x
  2. Step 2: Convert to fraction form
    20,401.82/28,155.46 = 11,902.58/x
  3. Step 3: Cross multiply
    20,401.82x = 28,155.46 × 11,902.58
  4. Step 4: Simplify right side
    20,401.82x = 335,122,615.09
  5. Step 5: Solve for x
    x = 335,122,615.09/20,401.82
  6. Step 6: Final answer
    x = 16,426.11

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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.