Home / 20,622.18-30,941.64-7,475.88

Finding the Fourth Proportional to 20,622.18, 30,941.64 and 7,475.88

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Solution

The fourth proportional to 20,622.18, 30,941.64 and 7,475.88 is: 11,216.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.18 : 30,941.64 = 7,475.88 : x
  2. Step 2: Convert to fraction form
    20,622.18/30,941.64 = 7,475.88/x
  3. Step 3: Cross multiply
    20,622.18x = 30,941.64 × 7,475.88
  4. Step 4: Simplify right side
    20,622.18x = 231,315,987.64
  5. Step 5: Solve for x
    x = 231,315,987.64/20,622.18
  6. Step 6: Final answer
    x = 11,216.85

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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.