Home / 12,819.80-19,229.70-5,799.80

Finding the Fourth Proportional to 12,819.80, 19,229.70 and 5,799.80

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Solution

The fourth proportional to 12,819.80, 19,229.70 and 5,799.80 is: 8,699.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,819.80 : 19,229.70 = 5,799.80 : x
  2. Step 2: Convert to fraction form
    12,819.80/19,229.70 = 5,799.80/x
  3. Step 3: Cross multiply
    12,819.80x = 19,229.70 × 5,799.80
  4. Step 4: Simplify right side
    12,819.80x = 111,528,414.06
  5. Step 5: Solve for x
    x = 111,528,414.06/12,819.80
  6. Step 6: Final answer
    x = 8,699.70

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Similar ratio
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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.