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Finding the Fourth Proportional to 20,150.90, 28,234.30 and 20,150.90

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Solution

The fourth proportional to 20,150.90, 28,234.30 and 20,150.90 is: 28,234.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,150.90 : 28,234.30 = 20,150.90 : x
  2. Step 2: Convert to fraction form
    20,150.90/28,234.30 = 20,150.90/x
  3. Step 3: Cross multiply
    20,150.90x = 28,234.30 × 20,150.90
  4. Step 4: Simplify right side
    20,150.90x = 568,946,555.87
  5. Step 5: Solve for x
    x = 568,946,555.87/20,150.90
  6. Step 6: Final answer
    x = 28,234.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.