Home / 21,243.44-29,288.40-13,676.24

Finding the Fourth Proportional to 21,243.44, 29,288.40 and 13,676.24

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Solution

The fourth proportional to 21,243.44, 29,288.40 and 13,676.24 is: 18,855.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.44 : 29,288.40 = 13,676.24 : x
  2. Step 2: Convert to fraction form
    21,243.44/29,288.40 = 13,676.24/x
  3. Step 3: Cross multiply
    21,243.44x = 29,288.40 × 13,676.24
  4. Step 4: Simplify right side
    21,243.44x = 400,555,187.62
  5. Step 5: Solve for x
    x = 400,555,187.62/21,243.44
  6. Step 6: Final answer
    x = 18,855.48

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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.