Home / 20,120.54-27,764.15-13,046.99

Finding the Fourth Proportional to 20,120.54, 27,764.15 and 13,046.99

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Solution

The fourth proportional to 20,120.54, 27,764.15 and 13,046.99 is: 18,003.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.54 : 27,764.15 = 13,046.99 : x
  2. Step 2: Convert to fraction form
    20,120.54/27,764.15 = 13,046.99/x
  3. Step 3: Cross multiply
    20,120.54x = 27,764.15 × 13,046.99
  4. Step 4: Simplify right side
    20,120.54x = 362,238,383.35
  5. Step 5: Solve for x
    x = 362,238,383.35/20,120.54
  6. Step 6: Final answer
    x = 18,003.42

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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.