Home / 21,175.59-29,222.11-11,615.28

Finding the Fourth Proportional to 21,175.59, 29,222.11 and 11,615.28

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Solution

The fourth proportional to 21,175.59, 29,222.11 and 11,615.28 is: 16,028.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,175.59 : 29,222.11 = 11,615.28 : x
  2. Step 2: Convert to fraction form
    21,175.59/29,222.11 = 11,615.28/x
  3. Step 3: Cross multiply
    21,175.59x = 29,222.11 × 11,615.28
  4. Step 4: Simplify right side
    21,175.59x = 339,422,960.80
  5. Step 5: Solve for x
    x = 339,422,960.80/21,175.59
  6. Step 6: Final answer
    x = 16,028.97

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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.