Home / 20,425.08-30,629.73-7,943.42

Finding the Fourth Proportional to 20,425.08, 30,629.73 and 7,943.42

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Solution

The fourth proportional to 20,425.08, 30,629.73 and 7,943.42 is: 11,912.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.08 : 30,629.73 = 7,943.42 : x
  2. Step 2: Convert to fraction form
    20,425.08/30,629.73 = 7,943.42/x
  3. Step 3: Cross multiply
    20,425.08x = 30,629.73 × 7,943.42
  4. Step 4: Simplify right side
    20,425.08x = 243,304,809.88
  5. Step 5: Solve for x
    x = 243,304,809.88/20,425.08
  6. Step 6: Final answer
    x = 11,912.06

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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.