Home / 20,439.97-28,228.58-14,083.09

Finding the Fourth Proportional to 20,439.97, 28,228.58 and 14,083.09

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Solution

The fourth proportional to 20,439.97, 28,228.58 and 14,083.09 is: 19,449.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.97 : 28,228.58 = 14,083.09 : x
  2. Step 2: Convert to fraction form
    20,439.97/28,228.58 = 14,083.09/x
  3. Step 3: Cross multiply
    20,439.97x = 28,228.58 × 14,083.09
  4. Step 4: Simplify right side
    20,439.97x = 397,545,562.30
  5. Step 5: Solve for x
    x = 397,545,562.30/20,439.97
  6. Step 6: Final answer
    x = 19,449.42

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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.