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Finding the Fourth Proportional to 20,201.76, 30,302.06 and 5,410.68

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Solution

The fourth proportional to 20,201.76, 30,302.06 and 5,410.68 is: 8,115.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,201.76 : 30,302.06 = 5,410.68 : x
  2. Step 2: Convert to fraction form
    20,201.76/30,302.06 = 5,410.68/x
  3. Step 3: Cross multiply
    20,201.76x = 30,302.06 × 5,410.68
  4. Step 4: Simplify right side
    20,201.76x = 163,954,750.00
  5. Step 5: Solve for x
    x = 163,954,750.00/20,201.76
  6. Step 6: Final answer
    x = 8,115.86

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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.