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Finding the Fourth Proportional to 30,348.15, 45,522.15 and 8,161.53

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Solution

The fourth proportional to 30,348.15, 45,522.15 and 8,161.53 is: 12,242.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,348.15 : 45,522.15 = 8,161.53 : x
  2. Step 2: Convert to fraction form
    30,348.15/45,522.15 = 8,161.53/x
  3. Step 3: Cross multiply
    30,348.15x = 45,522.15 × 8,161.53
  4. Step 4: Simplify right side
    30,348.15x = 371,530,392.89
  5. Step 5: Solve for x
    x = 371,530,392.89/30,348.15
  6. Step 6: Final answer
    x = 12,242.27

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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.