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Finding the Fourth Proportional to 20,372.01, 30,558.05 and 5,581.06

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Solution

The fourth proportional to 20,372.01, 30,558.05 and 5,581.06 is: 8,371.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,372.01 : 30,558.05 = 5,581.06 : x
  2. Step 2: Convert to fraction form
    20,372.01/30,558.05 = 5,581.06/x
  3. Step 3: Cross multiply
    20,372.01x = 30,558.05 × 5,581.06
  4. Step 4: Simplify right side
    20,372.01x = 170,546,310.53
  5. Step 5: Solve for x
    x = 170,546,310.53/20,372.01
  6. Step 6: Final answer
    x = 8,371.60

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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.