Home / 20,976.23-31,442.48-8,504.87

Finding the Fourth Proportional to 20,976.23, 31,442.48 and 8,504.87

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Solution

The fourth proportional to 20,976.23, 31,442.48 and 8,504.87 is: 12,748.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.23 : 31,442.48 = 8,504.87 : x
  2. Step 2: Convert to fraction form
    20,976.23/31,442.48 = 8,504.87/x
  3. Step 3: Cross multiply
    20,976.23x = 31,442.48 × 8,504.87
  4. Step 4: Simplify right side
    20,976.23x = 267,414,037.03
  5. Step 5: Solve for x
    x = 267,414,037.03/20,976.23
  6. Step 6: Final answer
    x = 12,748.43

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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.