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Finding the Fourth Proportional to 16,819.80, 25,237.80 and 12,869.70

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Solution

The fourth proportional to 16,819.80, 25,237.80 and 12,869.70 is: 19,310.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,819.80 : 25,237.80 = 12,869.70 : x
  2. Step 2: Convert to fraction form
    16,819.80/25,237.80 = 12,869.70/x
  3. Step 3: Cross multiply
    16,819.80x = 25,237.80 × 12,869.70
  4. Step 4: Simplify right side
    16,819.80x = 324,802,914.66
  5. Step 5: Solve for x
    x = 324,802,914.66/16,819.80
  6. Step 6: Final answer
    x = 19,310.75

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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.