Home / 21,040.26-29,022.75-12,536.79

Finding the Fourth Proportional to 21,040.26, 29,022.75 and 12,536.79

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Solution

The fourth proportional to 21,040.26, 29,022.75 and 12,536.79 is: 17,293.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,040.26 : 29,022.75 = 12,536.79 : x
  2. Step 2: Convert to fraction form
    21,040.26/29,022.75 = 12,536.79/x
  3. Step 3: Cross multiply
    21,040.26x = 29,022.75 × 12,536.79
  4. Step 4: Simplify right side
    21,040.26x = 363,852,121.97
  5. Step 5: Solve for x
    x = 363,852,121.97/21,040.26
  6. Step 6: Final answer
    x = 17,293.14

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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.