Home / 20,626.18-30,906.29-13,224.49

Finding the Fourth Proportional to 20,626.18, 30,906.29 and 13,224.49

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Solution

The fourth proportional to 20,626.18, 30,906.29 and 13,224.49 is: 19,815.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,626.18 : 30,906.29 = 13,224.49 : x
  2. Step 2: Convert to fraction form
    20,626.18/30,906.29 = 13,224.49/x
  3. Step 3: Cross multiply
    20,626.18x = 30,906.29 × 13,224.49
  4. Step 4: Simplify right side
    20,626.18x = 408,719,878.84
  5. Step 5: Solve for x
    x = 408,719,878.84/20,626.18
  6. Step 6: Final answer
    x = 19,815.59

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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.