Home / 20,425.26-28,181.91-11,922.52

Finding the Fourth Proportional to 20,425.26, 28,181.91 and 11,922.52

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Solution

The fourth proportional to 20,425.26, 28,181.91 and 11,922.52 is: 16,450.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.26 : 28,181.91 = 11,922.52 : x
  2. Step 2: Convert to fraction form
    20,425.26/28,181.91 = 11,922.52/x
  3. Step 3: Cross multiply
    20,425.26x = 28,181.91 × 11,922.52
  4. Step 4: Simplify right side
    20,425.26x = 335,999,385.61
  5. Step 5: Solve for x
    x = 335,999,385.61/20,425.26
  6. Step 6: Final answer
    x = 16,450.19

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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.