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Finding the Fourth Proportional to 19,994.20, 30,002.10 and 8,902.60

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Solution

The fourth proportional to 19,994.20, 30,002.10 and 8,902.60 is: 13,358.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,994.20 : 30,002.10 = 8,902.60 : x
  2. Step 2: Convert to fraction form
    19,994.20/30,002.10 = 8,902.60/x
  3. Step 3: Cross multiply
    19,994.20x = 30,002.10 × 8,902.60
  4. Step 4: Simplify right side
    19,994.20x = 267,096,695.46
  5. Step 5: Solve for x
    x = 267,096,695.46/19,994.20
  6. Step 6: Final answer
    x = 13,358.71

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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.