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Finding the Fourth Proportional to 13,236.76, 19,819.62 and 6,983.80

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Solution

The fourth proportional to 13,236.76, 19,819.62 and 6,983.80 is: 10,456.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,236.76 : 19,819.62 = 6,983.80 : x
  2. Step 2: Convert to fraction form
    13,236.76/19,819.62 = 6,983.80/x
  3. Step 3: Cross multiply
    13,236.76x = 19,819.62 × 6,983.80
  4. Step 4: Simplify right side
    13,236.76x = 138,416,262.16
  5. Step 5: Solve for x
    x = 138,416,262.16/13,236.76
  6. Step 6: Final answer
    x = 10,456.96

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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.