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Finding the Fourth Proportional to 20,066.70, 30,103.65 and 8,381.10

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Solution

The fourth proportional to 20,066.70, 30,103.65 and 8,381.10 is: 12,573.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,066.70 : 30,103.65 = 8,381.10 : x
  2. Step 2: Convert to fraction form
    20,066.70/30,103.65 = 8,381.10/x
  3. Step 3: Cross multiply
    20,066.70x = 30,103.65 × 8,381.10
  4. Step 4: Simplify right side
    20,066.70x = 252,301,701.02
  5. Step 5: Solve for x
    x = 252,301,701.02/20,066.70
  6. Step 6: Final answer
    x = 12,573.15

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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.