Home / 20,932-28,885.38-11,371.48

Finding the Fourth Proportional to 20,932, 28,885.38 and 11,371.48

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Solution

The fourth proportional to 20,932, 28,885.38 and 11,371.48 is: 15,692.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932 : 28,885.38 = 11,371.48 : x
  2. Step 2: Convert to fraction form
    20,932/28,885.38 = 11,371.48/x
  3. Step 3: Cross multiply
    20,932x = 28,885.38 × 11,371.48
  4. Step 4: Simplify right side
    20,932x = 328,469,520.96
  5. Step 5: Solve for x
    x = 328,469,520.96/20,932
  6. Step 6: Final answer
    x = 15,692.22

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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.