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Finding the Fourth Proportional to 20,171.10, 30,256.65 and 20,171.10

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Solution

The fourth proportional to 20,171.10, 30,256.65 and 20,171.10 is: 30,256.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.10 : 30,256.65 = 20,171.10 : x
  2. Step 2: Convert to fraction form
    20,171.10/30,256.65 = 20,171.10/x
  3. Step 3: Cross multiply
    20,171.10x = 30,256.65 × 20,171.10
  4. Step 4: Simplify right side
    20,171.10x = 610,309,912.82
  5. Step 5: Solve for x
    x = 610,309,912.82/20,171.10
  6. Step 6: Final answer
    x = 30,256.65

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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.