Home / 20,419.25-30,626.08-5,626.04

Finding the Fourth Proportional to 20,419.25, 30,626.08 and 5,626.04

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Solution

The fourth proportional to 20,419.25, 30,626.08 and 5,626.04 is: 8,438.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,419.25 : 30,626.08 = 5,626.04 : x
  2. Step 2: Convert to fraction form
    20,419.25/30,626.08 = 5,626.04/x
  3. Step 3: Cross multiply
    20,419.25x = 30,626.08 × 5,626.04
  4. Step 4: Simplify right side
    20,419.25x = 172,303,383.93
  5. Step 5: Solve for x
    x = 172,303,383.93/20,419.25
  6. Step 6: Final answer
    x = 8,438.28

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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.