Home / 12,819.60-19,229.40-8,672.40

Finding the Fourth Proportional to 12,819.60, 19,229.40 and 8,672.40

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Solution

The fourth proportional to 12,819.60, 19,229.40 and 8,672.40 is: 13,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,819.60 : 19,229.40 = 8,672.40 : x
  2. Step 2: Convert to fraction form
    12,819.60/19,229.40 = 8,672.40/x
  3. Step 3: Cross multiply
    12,819.60x = 19,229.40 × 8,672.40
  4. Step 4: Simplify right side
    12,819.60x = 166,765,048.56
  5. Step 5: Solve for x
    x = 166,765,048.56/12,819.60
  6. Step 6: Final answer
    x = 13,008.60

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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.