Home / 10,478.33-15,717.74-3,456.09

Finding the Fourth Proportional to 10,478.33, 15,717.74 and 3,456.09

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Solution

The fourth proportional to 10,478.33, 15,717.74 and 3,456.09 is: 5,184.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.33 : 15,717.74 = 3,456.09 : x
  2. Step 2: Convert to fraction form
    10,478.33/15,717.74 = 3,456.09/x
  3. Step 3: Cross multiply
    10,478.33x = 15,717.74 × 3,456.09
  4. Step 4: Simplify right side
    10,478.33x = 54,321,906.76
  5. Step 5: Solve for x
    x = 54,321,906.76/10,478.33
  6. Step 6: Final answer
    x = 5,184.21

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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.