Home / 21,268.70-31,959.37-11,415.26

Finding the Fourth Proportional to 21,268.70, 31,959.37 and 11,415.26

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Solution

The fourth proportional to 21,268.70, 31,959.37 and 11,415.26 is: 17,153.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.70 : 31,959.37 = 11,415.26 : x
  2. Step 2: Convert to fraction form
    21,268.70/31,959.37 = 11,415.26/x
  3. Step 3: Cross multiply
    21,268.70x = 31,959.37 × 11,415.26
  4. Step 4: Simplify right side
    21,268.70x = 364,824,517.99
  5. Step 5: Solve for x
    x = 364,824,517.99/21,268.70
  6. Step 6: Final answer
    x = 17,153.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.