Home / 17,581.75-26,371.25-7,721.11

Finding the Fourth Proportional to 17,581.75, 26,371.25 and 7,721.11

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Solution

The fourth proportional to 17,581.75, 26,371.25 and 7,721.11 is: 11,581.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,581.75 : 26,371.25 = 7,721.11 : x
  2. Step 2: Convert to fraction form
    17,581.75/26,371.25 = 7,721.11/x
  3. Step 3: Cross multiply
    17,581.75x = 26,371.25 × 7,721.11
  4. Step 4: Simplify right side
    17,581.75x = 203,615,322.09
  5. Step 5: Solve for x
    x = 203,615,322.09/17,581.75
  6. Step 6: Final answer
    x = 11,581.06

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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.