Home / 10,556.40-15,828.60-3,982.80

Finding the Fourth Proportional to 10,556.40, 15,828.60 and 3,982.80

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Solution

The fourth proportional to 10,556.40, 15,828.60 and 3,982.80 is: 5,971.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,556.40 : 15,828.60 = 3,982.80 : x
  2. Step 2: Convert to fraction form
    10,556.40/15,828.60 = 3,982.80/x
  3. Step 3: Cross multiply
    10,556.40x = 15,828.60 × 3,982.80
  4. Step 4: Simplify right side
    10,556.40x = 63,042,148.08
  5. Step 5: Solve for x
    x = 63,042,148.08/10,556.40
  6. Step 6: Final answer
    x = 5,971.94

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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.