Home / 20,441.08-28,209.26-11,489.40

Finding the Fourth Proportional to 20,441.08, 28,209.26 and 11,489.40

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Solution

The fourth proportional to 20,441.08, 28,209.26 and 11,489.40 is: 15,855.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,441.08 : 28,209.26 = 11,489.40 : x
  2. Step 2: Convert to fraction form
    20,441.08/28,209.26 = 11,489.40/x
  3. Step 3: Cross multiply
    20,441.08x = 28,209.26 × 11,489.40
  4. Step 4: Simplify right side
    20,441.08x = 324,107,471.84
  5. Step 5: Solve for x
    x = 324,107,471.84/20,441.08
  6. Step 6: Final answer
    x = 15,855.69

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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.