Home / 20,680.64-31,024.38-8,200.73

Finding the Fourth Proportional to 20,680.64, 31,024.38 and 8,200.73

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Solution

The fourth proportional to 20,680.64, 31,024.38 and 8,200.73 is: 12,302.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.64 : 31,024.38 = 8,200.73 : x
  2. Step 2: Convert to fraction form
    20,680.64/31,024.38 = 8,200.73/x
  3. Step 3: Cross multiply
    20,680.64x = 31,024.38 × 8,200.73
  4. Step 4: Simplify right side
    20,680.64x = 254,422,428.41
  5. Step 5: Solve for x
    x = 254,422,428.41/20,680.64
  6. Step 6: Final answer
    x = 12,302.44

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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.