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Finding the Fourth Proportional to 19,694.80, 29,548.20 and 11,806.12

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Solution

The fourth proportional to 19,694.80, 29,548.20 and 11,806.12 is: 17,712.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,694.80 : 29,548.20 = 11,806.12 : x
  2. Step 2: Convert to fraction form
    19,694.80/29,548.20 = 11,806.12/x
  3. Step 3: Cross multiply
    19,694.80x = 29,548.20 × 11,806.12
  4. Step 4: Simplify right side
    19,694.80x = 348,849,594.98
  5. Step 5: Solve for x
    x = 348,849,594.98/19,694.80
  6. Step 6: Final answer
    x = 17,712.78

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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.