Home / 20,107.82-27,741.20-14,815.28

Finding the Fourth Proportional to 20,107.82, 27,741.20 and 14,815.28

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Solution

The fourth proportional to 20,107.82, 27,741.20 and 14,815.28 is: 20,439.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.82 : 27,741.20 = 14,815.28 : x
  2. Step 2: Convert to fraction form
    20,107.82/27,741.20 = 14,815.28/x
  3. Step 3: Cross multiply
    20,107.82x = 27,741.20 × 14,815.28
  4. Step 4: Simplify right side
    20,107.82x = 410,993,645.54
  5. Step 5: Solve for x
    x = 410,993,645.54/20,107.82
  6. Step 6: Final answer
    x = 20,439.49

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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.