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Finding the Fourth Proportional to 20,170.10, 28,267.30 and 20,170.10

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Solution

The fourth proportional to 20,170.10, 28,267.30 and 20,170.10 is: 28,267.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.10 : 28,267.30 = 20,170.10 : x
  2. Step 2: Convert to fraction form
    20,170.10/28,267.30 = 20,170.10/x
  3. Step 3: Cross multiply
    20,170.10x = 28,267.30 × 20,170.10
  4. Step 4: Simplify right side
    20,170.10x = 570,154,267.73
  5. Step 5: Solve for x
    x = 570,154,267.73/20,170.10
  6. Step 6: Final answer
    x = 28,267.30

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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.