Home / 20,618.01-30,906.18-8,133.21

Finding the Fourth Proportional to 20,618.01, 30,906.18 and 8,133.21

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Solution

The fourth proportional to 20,618.01, 30,906.18 and 8,133.21 is: 12,191.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.01 : 30,906.18 = 8,133.21 : x
  2. Step 2: Convert to fraction form
    20,618.01/30,906.18 = 8,133.21/x
  3. Step 3: Cross multiply
    20,618.01x = 30,906.18 × 8,133.21
  4. Step 4: Simplify right side
    20,618.01x = 251,366,452.24
  5. Step 5: Solve for x
    x = 251,366,452.24/20,618.01
  6. Step 6: Final answer
    x = 12,191.60

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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.