Home / 21,080.33-29,090.37-11,519.80

Finding the Fourth Proportional to 21,080.33, 29,090.37 and 11,519.80

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Solution

The fourth proportional to 21,080.33, 29,090.37 and 11,519.80 is: 15,897.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080.33 : 29,090.37 = 11,519.80 : x
  2. Step 2: Convert to fraction form
    21,080.33/29,090.37 = 11,519.80/x
  3. Step 3: Cross multiply
    21,080.33x = 29,090.37 × 11,519.80
  4. Step 4: Simplify right side
    21,080.33x = 335,115,281.23
  5. Step 5: Solve for x
    x = 335,115,281.23/21,080.33
  6. Step 6: Final answer
    x = 15,897.06

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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.