Home / 20,914.08-28,860.12-11,481.84

Finding the Fourth Proportional to 20,914.08, 28,860.12 and 11,481.84

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Solution

The fourth proportional to 20,914.08, 28,860.12 and 11,481.84 is: 15,844.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.08 : 28,860.12 = 11,481.84 : x
  2. Step 2: Convert to fraction form
    20,914.08/28,860.12 = 11,481.84/x
  3. Step 3: Cross multiply
    20,914.08x = 28,860.12 × 11,481.84
  4. Step 4: Simplify right side
    20,914.08x = 331,367,280.22
  5. Step 5: Solve for x
    x = 331,367,280.22/20,914.08
  6. Step 6: Final answer
    x = 15,844.22

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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.