Home / 21,197.33-31,827.21-11,855.66

Finding the Fourth Proportional to 21,197.33, 31,827.21 and 11,855.66

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Solution

The fourth proportional to 21,197.33, 31,827.21 and 11,855.66 is: 17,800.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197.33 : 31,827.21 = 11,855.66 : x
  2. Step 2: Convert to fraction form
    21,197.33/31,827.21 = 11,855.66/x
  3. Step 3: Cross multiply
    21,197.33x = 31,827.21 × 11,855.66
  4. Step 4: Simplify right side
    21,197.33x = 377,332,421.37
  5. Step 5: Solve for x
    x = 377,332,421.37/21,197.33
  6. Step 6: Final answer
    x = 17,800.95

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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.