Home / 20,305.49-28,019.25-11,806.43

Finding the Fourth Proportional to 20,305.49, 28,019.25 and 11,806.43

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Solution

The fourth proportional to 20,305.49, 28,019.25 and 11,806.43 is: 16,291.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,305.49 : 28,019.25 = 11,806.43 : x
  2. Step 2: Convert to fraction form
    20,305.49/28,019.25 = 11,806.43/x
  3. Step 3: Cross multiply
    20,305.49x = 28,019.25 × 11,806.43
  4. Step 4: Simplify right side
    20,305.49x = 330,807,173.68
  5. Step 5: Solve for x
    x = 330,807,173.68/20,305.49
  6. Step 6: Final answer
    x = 16,291.52

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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.