Home / 20,322.85-30,485.13-7,175.29

Finding the Fourth Proportional to 20,322.85, 30,485.13 and 7,175.29

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Solution

The fourth proportional to 20,322.85, 30,485.13 and 7,175.29 is: 10,763.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.85 : 30,485.13 = 7,175.29 : x
  2. Step 2: Convert to fraction form
    20,322.85/30,485.13 = 7,175.29/x
  3. Step 3: Cross multiply
    20,322.85x = 30,485.13 × 7,175.29
  4. Step 4: Simplify right side
    20,322.85x = 218,739,648.44
  5. Step 5: Solve for x
    x = 218,739,648.44/20,322.85
  6. Step 6: Final answer
    x = 10,763.24

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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.