Home / 19,805.28-27,321.48-12,633.36

Finding the Fourth Proportional to 19,805.28, 27,321.48 and 12,633.36

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Solution

The fourth proportional to 19,805.28, 27,321.48 and 12,633.36 is: 17,427.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,805.28 : 27,321.48 = 12,633.36 : x
  2. Step 2: Convert to fraction form
    19,805.28/27,321.48 = 12,633.36/x
  3. Step 3: Cross multiply
    19,805.28x = 27,321.48 × 12,633.36
  4. Step 4: Simplify right side
    19,805.28x = 345,162,092.57
  5. Step 5: Solve for x
    x = 345,162,092.57/19,805.28
  6. Step 6: Final answer
    x = 17,427.78

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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.