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Finding the Fourth Proportional to 20,021.62, 27,630.62 and 13,295.65

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Solution

The fourth proportional to 20,021.62, 27,630.62 and 13,295.65 is: 18,348.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,021.62 : 27,630.62 = 13,295.65 : x
  2. Step 2: Convert to fraction form
    20,021.62/27,630.62 = 13,295.65/x
  3. Step 3: Cross multiply
    20,021.62x = 27,630.62 × 13,295.65
  4. Step 4: Simplify right side
    20,021.62x = 367,367,052.80
  5. Step 5: Solve for x
    x = 367,367,052.80/20,021.62
  6. Step 6: Final answer
    x = 18,348.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.