Home / 20,914.96-28,860.87-11,961.01

Finding the Fourth Proportional to 20,914.96, 28,860.87 and 11,961.01

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Solution

The fourth proportional to 20,914.96, 28,860.87 and 11,961.01 is: 16,505.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.96 : 28,860.87 = 11,961.01 : x
  2. Step 2: Convert to fraction form
    20,914.96/28,860.87 = 11,961.01/x
  3. Step 3: Cross multiply
    20,914.96x = 28,860.87 × 11,961.01
  4. Step 4: Simplify right side
    20,914.96x = 345,205,154.68
  5. Step 5: Solve for x
    x = 345,205,154.68/20,914.96
  6. Step 6: Final answer
    x = 16,505.18

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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.