Home / 11,721.75-17,582.63-3,513.75

Finding the Fourth Proportional to 11,721.75, 17,582.63 and 3,513.75

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Solution

The fourth proportional to 11,721.75, 17,582.63 and 3,513.75 is: 5,270.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.75 : 17,582.63 = 3,513.75 : x
  2. Step 2: Convert to fraction form
    11,721.75/17,582.63 = 3,513.75/x
  3. Step 3: Cross multiply
    11,721.75x = 17,582.63 × 3,513.75
  4. Step 4: Simplify right side
    11,721.75x = 61,780,948.59
  5. Step 5: Solve for x
    x = 61,780,948.59/11,721.75
  6. Step 6: Final answer
    x = 5,270.63

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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.