Home / 21,327.03-29,431.36-11,896.20

Finding the Fourth Proportional to 21,327.03, 29,431.36 and 11,896.20

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Solution

The fourth proportional to 21,327.03, 29,431.36 and 11,896.20 is: 16,416.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.03 : 29,431.36 = 11,896.20 : x
  2. Step 2: Convert to fraction form
    21,327.03/29,431.36 = 11,896.20/x
  3. Step 3: Cross multiply
    21,327.03x = 29,431.36 × 11,896.20
  4. Step 4: Simplify right side
    21,327.03x = 350,121,359.70
  5. Step 5: Solve for x
    x = 350,121,359.70/21,327.03
  6. Step 6: Final answer
    x = 16,416.79

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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.