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Finding the Fourth Proportional to 20,404.84, 30,607.74 and 6,553.96

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Solution

The fourth proportional to 20,404.84, 30,607.74 and 6,553.96 is: 9,831.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.84 : 30,607.74 = 6,553.96 : x
  2. Step 2: Convert to fraction form
    20,404.84/30,607.74 = 6,553.96/x
  3. Step 3: Cross multiply
    20,404.84x = 30,607.74 × 6,553.96
  4. Step 4: Simplify right side
    20,404.84x = 200,601,903.65
  5. Step 5: Solve for x
    x = 200,601,903.65/20,404.84
  6. Step 6: Final answer
    x = 9,831.09

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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.