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Finding the Fourth Proportional to 19,799.97, 29,701.89 and 5,760.12

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Solution

The fourth proportional to 19,799.97, 29,701.89 and 5,760.12 is: 8,640.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,799.97 : 29,701.89 = 5,760.12 : x
  2. Step 2: Convert to fraction form
    19,799.97/29,701.89 = 5,760.12/x
  3. Step 3: Cross multiply
    19,799.97x = 29,701.89 × 5,760.12
  4. Step 4: Simplify right side
    19,799.97x = 171,086,450.63
  5. Step 5: Solve for x
    x = 171,086,450.63/19,799.97
  6. Step 6: Final answer
    x = 8,640.74

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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.