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Finding the Fourth Proportional to 30,486.27, 45,730.89 and 9,440.85

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Solution

The fourth proportional to 30,486.27, 45,730.89 and 9,440.85 is: 14,161.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,486.27 : 45,730.89 = 9,440.85 : x
  2. Step 2: Convert to fraction form
    30,486.27/45,730.89 = 9,440.85/x
  3. Step 3: Cross multiply
    30,486.27x = 45,730.89 × 9,440.85
  4. Step 4: Simplify right side
    30,486.27x = 431,738,472.86
  5. Step 5: Solve for x
    x = 431,738,472.86/30,486.27
  6. Step 6: Final answer
    x = 14,161.73

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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.