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Finding the Fourth Proportional to 19,969.77, 29,958.18 and 6,819.06

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Solution

The fourth proportional to 19,969.77, 29,958.18 and 6,819.06 is: 10,229.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,969.77 : 29,958.18 = 6,819.06 : x
  2. Step 2: Convert to fraction form
    19,969.77/29,958.18 = 6,819.06/x
  3. Step 3: Cross multiply
    19,969.77x = 29,958.18 × 6,819.06
  4. Step 4: Simplify right side
    19,969.77x = 204,286,626.91
  5. Step 5: Solve for x
    x = 204,286,626.91/19,969.77
  6. Step 6: Final answer
    x = 10,229.79

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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.