Home / 12,792.20-19,217.10-12,446.60

Finding the Fourth Proportional to 12,792.20, 19,217.10 and 12,446.60

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Solution

The fourth proportional to 12,792.20, 19,217.10 and 12,446.60 is: 18,697.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,792.20 : 19,217.10 = 12,446.60 : x
  2. Step 2: Convert to fraction form
    12,792.20/19,217.10 = 12,446.60/x
  3. Step 3: Cross multiply
    12,792.20x = 19,217.10 × 12,446.60
  4. Step 4: Simplify right side
    12,792.20x = 239,187,556.86
  5. Step 5: Solve for x
    x = 239,187,556.86/12,792.20
  6. Step 6: Final answer
    x = 18,697.92

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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.