Home / 20,184.20-30,204.30-12,792.20

Finding the Fourth Proportional to 20,184.20, 30,204.30 and 12,792.20

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Solution

The fourth proportional to 20,184.20, 30,204.30 and 12,792.20 is: 19,142.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,184.20 : 30,204.30 = 12,792.20 : x
  2. Step 2: Convert to fraction form
    20,184.20/30,204.30 = 12,792.20/x
  3. Step 3: Cross multiply
    20,184.20x = 30,204.30 × 12,792.20
  4. Step 4: Simplify right side
    20,184.20x = 386,379,446.46
  5. Step 5: Solve for x
    x = 386,379,446.46/20,184.20
  6. Step 6: Final answer
    x = 19,142.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.