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Finding the Fourth Proportional to 30,394.40, 45,591.53 and 8,209.98

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Solution

The fourth proportional to 30,394.40, 45,591.53 and 8,209.98 is: 12,314.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,394.40 : 45,591.53 = 8,209.98 : x
  2. Step 2: Convert to fraction form
    30,394.40/45,591.53 = 8,209.98/x
  3. Step 3: Cross multiply
    30,394.40x = 45,591.53 × 8,209.98
  4. Step 4: Simplify right side
    30,394.40x = 374,305,508.42
  5. Step 5: Solve for x
    x = 374,305,508.42/30,394.40
  6. Step 6: Final answer
    x = 12,314.95

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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.