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Finding the Fourth Proportional to 18,029.80, 27,051.90 and 7,648.84

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Solution

The fourth proportional to 18,029.80, 27,051.90 and 7,648.84 is: 11,476.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,029.80 : 27,051.90 = 7,648.84 : x
  2. Step 2: Convert to fraction form
    18,029.80/27,051.90 = 7,648.84/x
  3. Step 3: Cross multiply
    18,029.80x = 27,051.90 × 7,648.84
  4. Step 4: Simplify right side
    18,029.80x = 206,915,654.80
  5. Step 5: Solve for x
    x = 206,915,654.80/18,029.80
  6. Step 6: Final answer
    x = 11,476.31

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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.