Home / 20,706.60-28,575.11-11,631.98

Finding the Fourth Proportional to 20,706.60, 28,575.11 and 11,631.98

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Solution

The fourth proportional to 20,706.60, 28,575.11 and 11,631.98 is: 16,052.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.60 : 28,575.11 = 11,631.98 : x
  2. Step 2: Convert to fraction form
    20,706.60/28,575.11 = 11,631.98/x
  3. Step 3: Cross multiply
    20,706.60x = 28,575.11 × 11,631.98
  4. Step 4: Simplify right side
    20,706.60x = 332,384,906.98
  5. Step 5: Solve for x
    x = 332,384,906.98/20,706.60
  6. Step 6: Final answer
    x = 16,052.12

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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.