Home / 21,079.88-29,090.01-11,519.66

Finding the Fourth Proportional to 21,079.88, 29,090.01 and 11,519.66

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Solution

The fourth proportional to 21,079.88, 29,090.01 and 11,519.66 is: 15,897.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.88 : 29,090.01 = 11,519.66 : x
  2. Step 2: Convert to fraction form
    21,079.88/29,090.01 = 11,519.66/x
  3. Step 3: Cross multiply
    21,079.88x = 29,090.01 × 11,519.66
  4. Step 4: Simplify right side
    21,079.88x = 335,106,879.15
  5. Step 5: Solve for x
    x = 335,106,879.15/21,079.88
  6. Step 6: Final answer
    x = 15,897.01

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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.