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Finding the Fourth Proportional to 15,047.62, 20,765.73 and 8,241.61

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Solution

The fourth proportional to 15,047.62, 20,765.73 and 8,241.61 is: 11,373.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,047.62 : 20,765.73 = 8,241.61 : x
  2. Step 2: Convert to fraction form
    15,047.62/20,765.73 = 8,241.61/x
  3. Step 3: Cross multiply
    15,047.62x = 20,765.73 × 8,241.61
  4. Step 4: Simplify right side
    15,047.62x = 171,143,048.03
  5. Step 5: Solve for x
    x = 171,143,048.03/15,047.62
  6. Step 6: Final answer
    x = 11,373.43

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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.