Home / 20,480.58-28,252.89-11,977.14

Finding the Fourth Proportional to 20,480.58, 28,252.89 and 11,977.14

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Solution

The fourth proportional to 20,480.58, 28,252.89 and 11,977.14 is: 16,522.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,480.58 : 28,252.89 = 11,977.14 : x
  2. Step 2: Convert to fraction form
    20,480.58/28,252.89 = 11,977.14/x
  3. Step 3: Cross multiply
    20,480.58x = 28,252.89 × 11,977.14
  4. Step 4: Simplify right side
    20,480.58x = 338,388,818.93
  5. Step 5: Solve for x
    x = 338,388,818.93/20,480.58
  6. Step 6: Final answer
    x = 16,522.42

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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.