Home / 20,441.76-28,209.63-11,489.25

Finding the Fourth Proportional to 20,441.76, 28,209.63 and 11,489.25

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Solution

The fourth proportional to 20,441.76, 28,209.63 and 11,489.25 is: 15,855.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,441.76 : 28,209.63 = 11,489.25 : x
  2. Step 2: Convert to fraction form
    20,441.76/28,209.63 = 11,489.25/x
  3. Step 3: Cross multiply
    20,441.76x = 28,209.63 × 11,489.25
  4. Step 4: Simplify right side
    20,441.76x = 324,107,491.48
  5. Step 5: Solve for x
    x = 324,107,491.48/20,441.76
  6. Step 6: Final answer
    x = 15,855.17

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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.