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Finding the Fourth Proportional to 30,480.57, 45,724.55 and 10,755.09

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Solution

The fourth proportional to 30,480.57, 45,724.55 and 10,755.09 is: 16,133.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,480.57 : 45,724.55 = 10,755.09 : x
  2. Step 2: Convert to fraction form
    30,480.57/45,724.55 = 10,755.09/x
  3. Step 3: Cross multiply
    30,480.57x = 45,724.55 × 10,755.09
  4. Step 4: Simplify right side
    30,480.57x = 491,771,596.68
  5. Step 5: Solve for x
    x = 491,771,596.68/30,480.57
  6. Step 6: Final answer
    x = 16,133.94

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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.