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Finding the Fourth Proportional to 30,663.25, 45,993.96 and 8,477.95

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Solution

The fourth proportional to 30,663.25, 45,993.96 and 8,477.95 is: 12,716.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,663.25 : 45,993.96 = 8,477.95 : x
  2. Step 2: Convert to fraction form
    30,663.25/45,993.96 = 8,477.95/x
  3. Step 3: Cross multiply
    30,663.25x = 45,993.96 × 8,477.95
  4. Step 4: Simplify right side
    30,663.25x = 389,934,493.18
  5. Step 5: Solve for x
    x = 389,934,493.18/30,663.25
  6. Step 6: Final answer
    x = 12,716.67

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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.