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Finding the Fourth Proportional to 20,601.04, 30,905.84 and 8,289.04

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Solution

The fourth proportional to 20,601.04, 30,905.84 and 8,289.04 is: 12,435.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.04 : 30,905.84 = 8,289.04 : x
  2. Step 2: Convert to fraction form
    20,601.04/30,905.84 = 8,289.04/x
  3. Step 3: Cross multiply
    20,601.04x = 30,905.84 × 8,289.04
  4. Step 4: Simplify right side
    20,601.04x = 256,179,743.99
  5. Step 5: Solve for x
    x = 256,179,743.99/20,601.04
  6. Step 6: Final answer
    x = 12,435.28

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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.