Home / 31,408.56-43,347.50-18,661.85

Finding the Fourth Proportional to 31,408.56, 43,347.50 and 18,661.85

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Solution

The fourth proportional to 31,408.56, 43,347.50 and 18,661.85 is: 25,755.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,408.56 : 43,347.50 = 18,661.85 : x
  2. Step 2: Convert to fraction form
    31,408.56/43,347.50 = 18,661.85/x
  3. Step 3: Cross multiply
    31,408.56x = 43,347.50 × 18,661.85
  4. Step 4: Simplify right side
    31,408.56x = 808,944,542.88
  5. Step 5: Solve for x
    x = 808,944,542.88/31,408.56
  6. Step 6: Final answer
    x = 25,755.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.