Home / 20,732.85-28,611.94-12,667.83

Finding the Fourth Proportional to 20,732.85, 28,611.94 and 12,667.83

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Solution

The fourth proportional to 20,732.85, 28,611.94 and 12,667.83 is: 17,481.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.85 : 28,611.94 = 12,667.83 : x
  2. Step 2: Convert to fraction form
    20,732.85/28,611.94 = 12,667.83/x
  3. Step 3: Cross multiply
    20,732.85x = 28,611.94 × 12,667.83
  4. Step 4: Simplify right side
    20,732.85x = 362,451,191.89
  5. Step 5: Solve for x
    x = 362,451,191.89/20,732.85
  6. Step 6: Final answer
    x = 17,481.98

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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.