Home / 20,651.20-30,967.13-12,105.25

Finding the Fourth Proportional to 20,651.20, 30,967.13 and 12,105.25

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Solution

The fourth proportional to 20,651.20, 30,967.13 and 12,105.25 is: 18,152.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651.20 : 30,967.13 = 12,105.25 : x
  2. Step 2: Convert to fraction form
    20,651.20/30,967.13 = 12,105.25/x
  3. Step 3: Cross multiply
    20,651.20x = 30,967.13 × 12,105.25
  4. Step 4: Simplify right side
    20,651.20x = 374,864,635.07
  5. Step 5: Solve for x
    x = 374,864,635.07/20,651.20
  6. Step 6: Final answer
    x = 18,152.20

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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.