Home / 30,379.20-45,610.76-20,996.08

Finding the Fourth Proportional to 30,379.20, 45,610.76 and 20,996.08

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Solution

The fourth proportional to 30,379.20, 45,610.76 and 20,996.08 is: 31,523.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,379.20 : 45,610.76 = 20,996.08 : x
  2. Step 2: Convert to fraction form
    30,379.20/45,610.76 = 20,996.08/x
  3. Step 3: Cross multiply
    30,379.20x = 45,610.76 × 20,996.08
  4. Step 4: Simplify right side
    30,379.20x = 957,647,165.82
  5. Step 5: Solve for x
    x = 957,647,165.82/30,379.20
  6. Step 6: Final answer
    x = 31,523.12

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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.