Home / 15,882.26-21,917.36-8,712.02

Finding the Fourth Proportional to 15,882.26, 21,917.36 and 8,712.02

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Solution

The fourth proportional to 15,882.26, 21,917.36 and 8,712.02 is: 12,022.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,882.26 : 21,917.36 = 8,712.02 : x
  2. Step 2: Convert to fraction form
    15,882.26/21,917.36 = 8,712.02/x
  3. Step 3: Cross multiply
    15,882.26x = 21,917.36 × 8,712.02
  4. Step 4: Simplify right side
    15,882.26x = 190,944,555.24
  5. Step 5: Solve for x
    x = 190,944,555.24/15,882.26
  6. Step 6: Final answer
    x = 12,022.51

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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.