Home / 17,581.29-26,390.16-11,778.45

Finding the Fourth Proportional to 17,581.29, 26,390.16 and 11,778.45

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Solution

The fourth proportional to 17,581.29, 26,390.16 and 11,778.45 is: 17,679.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,581.29 : 26,390.16 = 11,778.45 : x
  2. Step 2: Convert to fraction form
    17,581.29/26,390.16 = 11,778.45/x
  3. Step 3: Cross multiply
    17,581.29x = 26,390.16 × 11,778.45
  4. Step 4: Simplify right side
    17,581.29x = 310,835,180.05
  5. Step 5: Solve for x
    x = 310,835,180.05/17,581.29
  6. Step 6: Final answer
    x = 17,679.88

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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.