Home / 21,549.29-29,739.36-11,991.31

Finding the Fourth Proportional to 21,549.29, 29,739.36 and 11,991.31

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Solution

The fourth proportional to 21,549.29, 29,739.36 and 11,991.31 is: 16,548.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,549.29 : 29,739.36 = 11,991.31 : x
  2. Step 2: Convert to fraction form
    21,549.29/29,739.36 = 11,991.31/x
  3. Step 3: Cross multiply
    21,549.29x = 29,739.36 × 11,991.31
  4. Step 4: Simplify right side
    21,549.29x = 356,613,884.96
  5. Step 5: Solve for x
    x = 356,613,884.96/21,549.29
  6. Step 6: Final answer
    x = 16,548.75

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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.