Home / 21,175.36-29,221.32-11,615.11

Finding the Fourth Proportional to 21,175.36, 29,221.32 and 11,615.11

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Solution

The fourth proportional to 21,175.36, 29,221.32 and 11,615.11 is: 16,028.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,175.36 : 29,221.32 = 11,615.11 : x
  2. Step 2: Convert to fraction form
    21,175.36/29,221.32 = 11,615.11/x
  3. Step 3: Cross multiply
    21,175.36x = 29,221.32 × 11,615.11
  4. Step 4: Simplify right side
    21,175.36x = 339,408,846.15
  5. Step 5: Solve for x
    x = 339,408,846.15/21,175.36
  6. Step 6: Final answer
    x = 16,028.48

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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.