Home / 20,172.06-27,839.88-12,217.02

Finding the Fourth Proportional to 20,172.06, 27,839.88 and 12,217.02

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Solution

The fourth proportional to 20,172.06, 27,839.88 and 12,217.02 is: 16,860.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172.06 : 27,839.88 = 12,217.02 : x
  2. Step 2: Convert to fraction form
    20,172.06/27,839.88 = 12,217.02/x
  3. Step 3: Cross multiply
    20,172.06x = 27,839.88 × 12,217.02
  4. Step 4: Simplify right side
    20,172.06x = 340,120,370.76
  5. Step 5: Solve for x
    x = 340,120,370.76/20,172.06
  6. Step 6: Final answer
    x = 16,860.96

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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.