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Finding the Fourth Proportional to 19,863.12, 29,793.12 and 8,770.08

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Solution

The fourth proportional to 19,863.12, 29,793.12 and 8,770.08 is: 13,154.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,863.12 : 29,793.12 = 8,770.08 : x
  2. Step 2: Convert to fraction form
    19,863.12/29,793.12 = 8,770.08/x
  3. Step 3: Cross multiply
    19,863.12x = 29,793.12 × 8,770.08
  4. Step 4: Simplify right side
    19,863.12x = 261,288,045.85
  5. Step 5: Solve for x
    x = 261,288,045.85/19,863.12
  6. Step 6: Final answer
    x = 13,154.43

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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.