Home / 87,884.21-131,826.12-21,324.29

Finding the Fourth Proportional to 87,884.21, 131,826.12 and 21,324.29

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Solution

The fourth proportional to 87,884.21, 131,826.12 and 21,324.29 is: 31,986.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,884.21 : 131,826.12 = 21,324.29 : x
  2. Step 2: Convert to fraction form
    87,884.21/131,826.12 = 21,324.29/x
  3. Step 3: Cross multiply
    87,884.21x = 131,826.12 × 21,324.29
  4. Step 4: Simplify right side
    87,884.21x = 2,811,097,673.36
  5. Step 5: Solve for x
    x = 2,811,097,673.36/87,884.21
  6. Step 6: Final answer
    x = 31,986.38

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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.