Home / 31,131.91-46,720.31-12,401.11

Finding the Fourth Proportional to 31,131.91, 46,720.31 and 12,401.11

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Solution

The fourth proportional to 31,131.91, 46,720.31 and 12,401.11 is: 18,610.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,131.91 : 46,720.31 = 12,401.11 : x
  2. Step 2: Convert to fraction form
    31,131.91/46,720.31 = 12,401.11/x
  3. Step 3: Cross multiply
    31,131.91x = 46,720.31 × 12,401.11
  4. Step 4: Simplify right side
    31,131.91x = 579,383,703.54
  5. Step 5: Solve for x
    x = 579,383,703.54/31,131.91
  6. Step 6: Final answer
    x = 18,610.61

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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.