Home / 20,704.49-28,575.92-12,206.11

Finding the Fourth Proportional to 20,704.49, 28,575.92 and 12,206.11

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Solution

The fourth proportional to 20,704.49, 28,575.92 and 12,206.11 is: 16,846.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.49 : 28,575.92 = 12,206.11 : x
  2. Step 2: Convert to fraction form
    20,704.49/28,575.92 = 12,206.11/x
  3. Step 3: Cross multiply
    20,704.49x = 28,575.92 × 12,206.11
  4. Step 4: Simplify right side
    20,704.49x = 348,800,781.95
  5. Step 5: Solve for x
    x = 348,800,781.95/20,704.49
  6. Step 6: Final answer
    x = 16,846.62

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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.