Home / 21,080.64-29,091.87-11,649.81

Finding the Fourth Proportional to 21,080.64, 29,091.87 and 11,649.81

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Solution

The fourth proportional to 21,080.64, 29,091.87 and 11,649.81 is: 16,077.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080.64 : 29,091.87 = 11,649.81 : x
  2. Step 2: Convert to fraction form
    21,080.64/29,091.87 = 11,649.81/x
  3. Step 3: Cross multiply
    21,080.64x = 29,091.87 × 11,649.81
  4. Step 4: Simplify right side
    21,080.64x = 338,914,758.04
  5. Step 5: Solve for x
    x = 338,914,758.04/21,080.64
  6. Step 6: Final answer
    x = 16,077.06

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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.