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Finding the Fourth Proportional to 14,819.69, 20,458.60 and 11,454.90

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Solution

The fourth proportional to 14,819.69, 20,458.60 and 11,454.90 is: 15,813.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,819.69 : 20,458.60 = 11,454.90 : x
  2. Step 2: Convert to fraction form
    14,819.69/20,458.60 = 11,454.90/x
  3. Step 3: Cross multiply
    14,819.69x = 20,458.60 × 11,454.90
  4. Step 4: Simplify right side
    14,819.69x = 234,351,217.14
  5. Step 5: Solve for x
    x = 234,351,217.14/14,819.69
  6. Step 6: Final answer
    x = 15,813.50

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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.