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Finding the Fourth Proportional to 14,819.10, 20,449.60 and 8,103.42

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Solution

The fourth proportional to 14,819.10, 20,449.60 and 8,103.42 is: 11,182.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,819.10 : 20,449.60 = 8,103.42 : x
  2. Step 2: Convert to fraction form
    14,819.10/20,449.60 = 8,103.42/x
  3. Step 3: Cross multiply
    14,819.10x = 20,449.60 × 8,103.42
  4. Step 4: Simplify right side
    14,819.10x = 165,711,677.37
  5. Step 5: Solve for x
    x = 165,711,677.37/14,819.10
  6. Step 6: Final answer
    x = 11,182.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.