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Finding the Fourth Proportional to 20,375.88, 30,572.54 and 8,532.42

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Solution

The fourth proportional to 20,375.88, 30,572.54 and 8,532.42 is: 12,802.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.88 : 30,572.54 = 8,532.42 : x
  2. Step 2: Convert to fraction form
    20,375.88/30,572.54 = 8,532.42/x
  3. Step 3: Cross multiply
    20,375.88x = 30,572.54 × 8,532.42
  4. Step 4: Simplify right side
    20,375.88x = 260,857,751.75
  5. Step 5: Solve for x
    x = 260,857,751.75/20,375.88
  6. Step 6: Final answer
    x = 12,802.28

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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.