Home / 20,464.38-30,700.62-7,983.90

Finding the Fourth Proportional to 20,464.38, 30,700.62 and 7,983.90

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Solution

The fourth proportional to 20,464.38, 30,700.62 and 7,983.90 is: 11,977.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,464.38 : 30,700.62 = 7,983.90 : x
  2. Step 2: Convert to fraction form
    20,464.38/30,700.62 = 7,983.90/x
  3. Step 3: Cross multiply
    20,464.38x = 30,700.62 × 7,983.90
  4. Step 4: Simplify right side
    20,464.38x = 245,110,680.02
  5. Step 5: Solve for x
    x = 245,110,680.02/20,464.38
  6. Step 6: Final answer
    x = 11,977.43

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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.