Home / 20,982.87-31,481.60-9,304.29

Finding the Fourth Proportional to 20,982.87, 31,481.60 and 9,304.29

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Solution

The fourth proportional to 20,982.87, 31,481.60 and 9,304.29 is: 13,959.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.87 : 31,481.60 = 9,304.29 : x
  2. Step 2: Convert to fraction form
    20,982.87/31,481.60 = 9,304.29/x
  3. Step 3: Cross multiply
    20,982.87x = 31,481.60 × 9,304.29
  4. Step 4: Simplify right side
    20,982.87x = 292,913,889.54
  5. Step 5: Solve for x
    x = 292,913,889.54/20,982.87
  6. Step 6: Final answer
    x = 13,959.67

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1.5x scale

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.