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Finding the Fourth Proportional to 30,932.70, 46,401.48 and 8,745.72

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Solution

The fourth proportional to 30,932.70, 46,401.48 and 8,745.72 is: 13,119.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,932.70 : 46,401.48 = 8,745.72 : x
  2. Step 2: Convert to fraction form
    30,932.70/46,401.48 = 8,745.72/x
  3. Step 3: Cross multiply
    30,932.70x = 46,401.48 × 8,745.72
  4. Step 4: Simplify right side
    30,932.70x = 405,814,351.67
  5. Step 5: Solve for x
    x = 405,814,351.67/30,932.70
  6. Step 6: Final answer
    x = 13,119.27

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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.