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Finding the Fourth Proportional to 20,144.10, 28,230.90 and 20,144.10

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Solution

The fourth proportional to 20,144.10, 28,230.90 and 20,144.10 is: 28,230.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.10 : 28,230.90 = 20,144.10 : x
  2. Step 2: Convert to fraction form
    20,144.10/28,230.90 = 20,144.10/x
  3. Step 3: Cross multiply
    20,144.10x = 28,230.90 × 20,144.10
  4. Step 4: Simplify right side
    20,144.10x = 568,686,072.69
  5. Step 5: Solve for x
    x = 568,686,072.69/20,144.10
  6. Step 6: Final answer
    x = 28,230.90

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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.