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Finding the Fourth Proportional to 20,473.87, 30,710.81 and 5,682.79

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Solution

The fourth proportional to 20,473.87, 30,710.81 and 5,682.79 is: 8,524.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.87 : 30,710.81 = 5,682.79 : x
  2. Step 2: Convert to fraction form
    20,473.87/30,710.81 = 5,682.79/x
  3. Step 3: Cross multiply
    20,473.87x = 30,710.81 × 5,682.79
  4. Step 4: Simplify right side
    20,473.87x = 174,523,083.96
  5. Step 5: Solve for x
    x = 174,523,083.96/20,473.87
  6. Step 6: Final answer
    x = 8,524.19

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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.