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Finding the Fourth Proportional to 20,250.60, 30,375.90 and 7,104.30

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Solution

The fourth proportional to 20,250.60, 30,375.90 and 7,104.30 is: 10,656.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,250.60 : 30,375.90 = 7,104.30 : x
  2. Step 2: Convert to fraction form
    20,250.60/30,375.90 = 7,104.30/x
  3. Step 3: Cross multiply
    20,250.60x = 30,375.90 × 7,104.30
  4. Step 4: Simplify right side
    20,250.60x = 215,799,506.37
  5. Step 5: Solve for x
    x = 215,799,506.37/20,250.60
  6. Step 6: Final answer
    x = 10,656.45

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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.