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Finding the Fourth Proportional to 30,486.14, 45,731.96 and 8,299.64

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Solution

The fourth proportional to 30,486.14, 45,731.96 and 8,299.64 is: 12,450.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,486.14 : 45,731.96 = 8,299.64 : x
  2. Step 2: Convert to fraction form
    30,486.14/45,731.96 = 8,299.64/x
  3. Step 3: Cross multiply
    30,486.14x = 45,731.96 × 8,299.64
  4. Step 4: Simplify right side
    30,486.14x = 379,558,804.49
  5. Step 5: Solve for x
    x = 379,558,804.49/30,486.14
  6. Step 6: Final answer
    x = 12,450.21

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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.