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Finding the Fourth Proportional to 30,338.91, 45,472.63 and 13,679.44

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Solution

The fourth proportional to 30,338.91, 45,472.63 and 13,679.44 is: 20,503.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,338.91 : 45,472.63 = 13,679.44 : x
  2. Step 2: Convert to fraction form
    30,338.91/45,472.63 = 13,679.44/x
  3. Step 3: Cross multiply
    30,338.91x = 45,472.63 × 13,679.44
  4. Step 4: Simplify right side
    30,338.91x = 622,040,113.73
  5. Step 5: Solve for x
    x = 622,040,113.73/30,338.91
  6. Step 6: Final answer
    x = 20,503.05

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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.