Home / 20,885.27-28,822.25-11,934.23

Finding the Fourth Proportional to 20,885.27, 28,822.25 and 11,934.23

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Solution

The fourth proportional to 20,885.27, 28,822.25 and 11,934.23 is: 16,469.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885.27 : 28,822.25 = 11,934.23 : x
  2. Step 2: Convert to fraction form
    20,885.27/28,822.25 = 11,934.23/x
  3. Step 3: Cross multiply
    20,885.27x = 28,822.25 × 11,934.23
  4. Step 4: Simplify right side
    20,885.27x = 343,971,300.95
  5. Step 5: Solve for x
    x = 343,971,300.95/20,885.27
  6. Step 6: Final answer
    x = 16,469.56

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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.