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Finding the Fourth Proportional to 30,402.87, 45,600.04 and 8,218.18

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Solution

The fourth proportional to 30,402.87, 45,600.04 and 8,218.18 is: 12,326.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,402.87 : 45,600.04 = 8,218.18 : x
  2. Step 2: Convert to fraction form
    30,402.87/45,600.04 = 8,218.18/x
  3. Step 3: Cross multiply
    30,402.87x = 45,600.04 × 8,218.18
  4. Step 4: Simplify right side
    30,402.87x = 374,749,336.73
  5. Step 5: Solve for x
    x = 374,749,336.73/30,402.87
  6. Step 6: Final answer
    x = 12,326.12

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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.