Home / 20,158.92-30,238.40-7,676

Finding the Fourth Proportional to 20,158.92, 30,238.40 and 7,676

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Solution

The fourth proportional to 20,158.92, 30,238.40 and 7,676 is: 11,514.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.92 : 30,238.40 = 7,676 : x
  2. Step 2: Convert to fraction form
    20,158.92/30,238.40 = 7,676/x
  3. Step 3: Cross multiply
    20,158.92x = 30,238.40 × 7,676
  4. Step 4: Simplify right side
    20,158.92x = 232,109,958.40
  5. Step 5: Solve for x
    x = 232,109,958.40/20,158.92
  6. Step 6: Final answer
    x = 11,514.01

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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.