Home / 21,198.34-31,797.51-8,725.15

Finding the Fourth Proportional to 21,198.34, 31,797.51 and 8,725.15

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Solution

The fourth proportional to 21,198.34, 31,797.51 and 8,725.15 is: 13,087.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.34 : 31,797.51 = 8,725.15 : x
  2. Step 2: Convert to fraction form
    21,198.34/31,797.51 = 8,725.15/x
  3. Step 3: Cross multiply
    21,198.34x = 31,797.51 × 8,725.15
  4. Step 4: Simplify right side
    21,198.34x = 277,438,044.38
  5. Step 5: Solve for x
    x = 277,438,044.38/21,198.34
  6. Step 6: Final answer
    x = 13,087.73

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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.