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Finding the Fourth Proportional to 15,029.73, 20,747.67 and 8,982.09

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Solution

The fourth proportional to 15,029.73, 20,747.67 and 8,982.09 is: 12,399.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,029.73 : 20,747.67 = 8,982.09 : x
  2. Step 2: Convert to fraction form
    15,029.73/20,747.67 = 8,982.09/x
  3. Step 3: Cross multiply
    15,029.73x = 20,747.67 × 8,982.09
  4. Step 4: Simplify right side
    15,029.73x = 186,357,439.23
  5. Step 5: Solve for x
    x = 186,357,439.23/15,029.73
  6. Step 6: Final answer
    x = 12,399.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.