Home / 31,315.75-46,961.97-12,589.49

Finding the Fourth Proportional to 31,315.75, 46,961.97 and 12,589.49

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Solution

The fourth proportional to 31,315.75, 46,961.97 and 12,589.49 is: 18,879.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,315.75 : 46,961.97 = 12,589.49 : x
  2. Step 2: Convert to fraction form
    31,315.75/46,961.97 = 12,589.49/x
  3. Step 3: Cross multiply
    31,315.75x = 46,961.97 × 12,589.49
  4. Step 4: Simplify right side
    31,315.75x = 591,227,251.70
  5. Step 5: Solve for x
    x = 591,227,251.70/31,315.75
  6. Step 6: Final answer
    x = 18,879.55

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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.