Home / 21,324.09-31,986.30-8,173.32

Finding the Fourth Proportional to 21,324.09, 31,986.30 and 8,173.32

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Solution

The fourth proportional to 21,324.09, 31,986.30 and 8,173.32 is: 12,260.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.09 : 31,986.30 = 8,173.32 : x
  2. Step 2: Convert to fraction form
    21,324.09/31,986.30 = 8,173.32/x
  3. Step 3: Cross multiply
    21,324.09x = 31,986.30 × 8,173.32
  4. Step 4: Simplify right side
    21,324.09x = 261,434,265.52
  5. Step 5: Solve for x
    x = 261,434,265.52/21,324.09
  6. Step 6: Final answer
    x = 12,260.04

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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.